CHANGES

Version 0.9.8.16:
(2019-04-02)

    updated for Thrift 0.12.0, gcc 8.3
    changed cmake build instructions, now builds with cmake/utils.cmake
    removal of redundant compiler flags
    added thrift 0.12.0 gen sources for all languages 
    change RangeServer BlockCache.MaxMemory to 90% of RangeServer.MemoryLimit from 100% physical
    added pam_ht_maxretries - Pluggable Authentication Module (Hypertable Max Retries)
    added Python Write Dipatcher Module (PyHelper based on HyperThrift C++)
    changed generate new thrift sources on build with all languages 
    changed no dependency for other targets for HyperThrift library
    added lib HyperThriftExtentions includes the SerializedCells related and ThriftHelper
    added SmartFd to Hypertable::Filesystem
    added new methods based on SmartFd to Hypertable::Filesystem
    added support of SmartFd to FsBroker::Lib::Client and dependencies
    added to FsBroker::Lib::Client:
          a bool retry_write_ok, true if applicable to retry, deletes old file by default
          methods for temp file: create_local_temp, append_to_temp, commit_temp
    set FsBroker::Lib::Client methods based on int fd to warn-deprecated
    added bool ConnectionManager::is_connection_state 
    added bool ConnectionManager::is_addr_exists
    changed Metalog, Commitlog, AccessGroupHintsFile to work with smartfd
    changed CellStore to work with smartfd, except CellStoreV0-6
    added a try again loops for processes relay on FsBrokerClient append
    changed additionally to RollLimit, logs-rolling is done as a new file required 
            including log-fragments as skippable sym-ref (only header)
    changed instead void CommitLog::load_cumulative_size_map return boolean
    added dyn config options:
          FsBroker.WriteRetryLimit, zero to skip, -1 unlimited
          FsBroker.RetryLimit, zero to skip, -1 unlimited
          Hypertable.RangeServer.CellStore.CreateWithTemp=bool, default false
    major improvement on Failure Tolerence of FsClient use and connection to FsBroker
    added integration test fsbroker-failure
    changed RangeServerConnectionManager on Master maps RS public_addr non_unique
    changed repr of fd/filename in logging of FsBroker::Lib::Client to a SmartFd 
    changed Hyperspace.Session.Reconnect config default value set to True   

Version 0.9.8.15:
(2018-12-19)

    Updated for libssh 0.8.5 (changes to deprecated and use of read_nonblocking)
    added support of ZSTD(zstandard) compressor for BlockCompressionCodec
    added macro USE_READDIR_R, false with glibc-2.23+
    changed readdir_r deprecated infavour of readdir depends on USE_READDIR_R(GLIBC version)
    changed ClientKeepaliveHandler, select next hyperspace replica client by index count 
    changed Hyperspace ClientKeepaliveHandler, Config/Properties assigned via Session
    added method get_next_replica to Hyperspace Session 
    added stricness to Berkeley DB events REP_DUPMASTER and DB_EVENT_REP_LOCAL_SITE_REMOVED, exit with HT_FATAL
    added dbenv->rep_sync(0) to on DB_EVENT_REP_CLIENT and DB_EVENT_REP_NEWMASTER(for client)
    changed finish_election in both cases of newly elected or was a master at DB_EVENT_REP_MASTER event
    removed unused cases of include Config and using namespace Config
    depcicated boost::program_options(libboost_program_options) 
    added files Common/Property.[h,cc] include namespace hypretable::Property
    changed definitions of MiB, KiB, etc. at Common/Property.h in Hypertable namespace 
    added class Property::Value with dependencies classes TypeDef and ValueDef<T>
    added files Common/PropertyValueEnumExt.h,c define EnumExt and gEnumExt types
    added callback set_cb_on_chg, an on change setter, to gEnumExt
    added file Common/PropertyValueGuarded.h define gBool, gInt32t and gStrings types 
    added callback set_cb_on_chg, an on change setter, to Property::ValueGuardedAtomic<T>
    added files Common/PropertiesParser.[h,cc] with classes ParserConfig, Parser
    added cfg methods g_boo(Bool), g_i32(int32_t), g_strs(Strings), g_enum_ext(gEnumExt) to PropertiesParser
    changed parsed cfg option validation and convertion is done by Property::ValueDef<T>
    added test Common/properties_parser_test
    removed test Common/config_test 
    changed Properties MapPair to <String, Property::ValuePtr>
    organized Common/Properties.[cc,h] and Config namespace and align to the new Config::Parser/ParserConfig
    changed cfg descriptions(cmdline,file desc) to new PropertiesParser configurations
    added config option Hypertable.Config.OnFileChange.Reload=True change to False will halt from reloading
    added config option Hypertable.Config.OnFileChange.Reload.Interval=600000 
    added config option Hypertable.Config.OnFileChange.file=path/hypertable-dyn.cfg (a strings type property) 
    added method Properties::load_files_by, loads cfg files from property name
    added to Config init, if main cfg file set with OnFileChange.file configured files loaded as well
    added file conf/hypertable-dyn.cfg the default configs of dynamic properties 
    changed cmake install hypertable.cfg.ini (hypertable.cfg remain for tests)
    added files and class AsyncComm/ConfigHandler 
          work with files from OnFileChange.file or use Hypertable.Config / --config file
          checks on files change and update properties for Guarded Value Types only
    added use of ConfigHandler by Hypertable.Config.OnFileChange.Reload for
          Master, Range, Thrift, FsBroker(C++) and Hyperspace
    changed property Hypertable.Logging.Level defined with gEnumExt, level is changeable at runtime
    changed property Hypertable.Verbose / --verbose to type gBool a g_boo() cfg
    added changeable at runtime configs for ThriftBroker SlowQueryLog.Enable and SlowQueryLog.LatencyThreshold
    added set_slow_query_logging call-back on ThriftBroker.SlowQueryLog.Enable change stop/start logging
    changed Hyperspace Configurations with Guarded types (g_i32) for
            Maintenance.Interval, Checkpoint.Size, LogGc.Interval, LogGc.MaxUnusedLogs, 
            KeepAlive.Interval, Lease.Interval, GracePeriod
    changed cfg Port, Workers and Reactors for cfg(Local, Qfs, Kfs, Mapr, Ceph) for the server-side
            to "FsBroker.Listen.Port",  "FsBroker.Listen.Workers",  "FsBroker.Listen.Reactors"
    changed all FsBroker configuration options to start with "FsBroker."
            specific apply on namespaces: Local, Hdfs, Mapr, Ceph, Qfs
            common options are on "FsBroker." configuration namespace
    removed completely prior DEPRECATED configuration options
    added a python module to Hypertable::Client with methods to namespace 
          module: from hypertable.hypertable_client import HypertableClient
    added supporting test HypertableClient-test (ht_client_test.py) for py2, py3, pypy2 and pypy3
    added cfg_reload a command and interpreter statement to Hyperspace(client-side) (experimental)
    TODO: test Hyperspace related (bdb) changes in big(3+ replicas) cluster environment
          apply possible/reasonable configurations to be dynamic property at run time

Version 0.9.8.14:
(2018-08-23)

    Updated for GCC 8.2, boost 1.68.0, maven 3.5.4
    Updated for Thrift 0.11.0 (no backward capabilitites)
    Updated for Ceph 13.2.0 FsBroker
    fixed ThriftBroker any shared_ptr switched to thrift::stdcxx::shared_ptr
    add new cmake option -DBOOST_NO_CXX11_SMART_PTR=1 for thrift to use Boost
    changed ThriftBroker does not need to inlcude boost
    changed ThriftBroker only apache::thrift namespace used from apache::
    removed std namespace from ThriftBroker's MetricsHandler
    added utilization of ThriftBroker.Workers configuration option 
    changed ThriftClient protocol and transport ptrs renamed with prefixed m_ as apache::thrift namespaces on-course 
    added options to link staticly with libboost, libstdc++ and libgcc 
    added new cmake option -DHT_NOT_STATIC_CORE=1
    changed Hyperspace client keep-alive handler selects a hyperspace-replica by round-robin
    added accessed with scope_guard for replica_map in ReplicationInfo
    added ReplicationInfo new methods rep_update_sites, rep_remove, rep_add, get_site 
    added a pointer to BerkeleyDbFilesystem cls in ReplicationInfo for callbacks
    changed method get_current_master of BerkeleyDbFilesystem uses safe ReplicationInfo::String get_site(int)
    added methods go_master, update_rep_sites to BerkeleyDbFilesystem
    changed BerkeleyDbFilesystem init exclude master-init and init made on DB_EVENT_REP_MASTER event with go_master
    changed BerkeleyDbFilesystem master, lost of ownership condition to is_master && master_eid != eid
    changed BerkeleyDbFilesystem condition for event DB_EVENT_REP_NEWMASTER new Master can be elected
    added on event DB_EVENT_REP_MASTER, in-case host is a new master, go_master() doing master init
    added a call to dbenv->rep_sync(0) to DB_EVENT_REP_PERM_FAILED, DB_EVENT_REP_SITE_ADDED events
    added a call of update_rep_sites for events DB_EVENT_REP_SITE_ADDED and DB_EVENT_REP_SITE_REMOVED
    added method BerkeleyDbFilesystem::update_rep_sites makes functionality of hot-adding replicas without Hyperspace.Replica.Host
    TODO: check Hyperspace related changes in cluster environment

Version 0.9.8.13:
(2018-06-01)

    Updated for Java 10.0.1, boost 1.66.0, maven 3.5.3
    adjustments toward gcc 8.1.0 (declaration issues with apache::thrift::)
    std::map require U__STRICT_ANSI__ flag (gcc 8.1.0) PageArenaAllocator doesn't need mapped_type 
    fixes to warnings for memset with non-trivial type
    ThriftClient with Zlib transport
    added new option for configuration file ThriftBroker.Transport=framed(default)/zlib
    added --thrift-transport=framed(default)/zlib option for ht-start-*service.sh
    added Hypertable::Thrift::Transport enum for ZLIB, FRAMED 
    added overloader for Hypertable::Thrift::Client(Transport, std::string, int, int)
    added supporting tests for ThriftClient over zlib transport
    changed libSigar, still required by hadoop/java, is now part of ThirdParty and included in libHyperThirdParty.so/a  
    added cmake new methods for more optimal build linking CommonUtil.cmake
    added new cmake options for optimizations -DHT_O_LEVEL=[1-6]
    added new build option linked with static libraries, except libc, libstdc++, libgcc_s and libboost all supported
    cmake tests can be performed in dual builds on the different linking methods
    fix for cronolog current log sym-relinking
    thrift generate perl GenThrift and pregenerated are no longer used
    fixes ThriftClient setup and tests for perl, ruby
    fix setup.py.in inlcude_path is by a found PyPy2/PyPy3 headers path
    compatabillity fixes relating to shared tests between py2/py3
    
Version 0.9.8.12:
(2018-02-26)

    Updated for Thrift 0.10.0, Java 9.0.4, gcc 7.3.0, berkeley-db 6.2.32
    Updated to std=C++17 with LTO on -O3
    Thrift build is protocol version dependent  
    Thrift gen is done each build gen files are not kept except cc at src/cc/ThriftBroker/thrift-version
    New configuration option Hypertable.RangeServer.Location.AutoReInitiate= defaults to false
    Python hypertable pkg structure has been changed and serialized_cells at pkg install
    HyperPython depreciated in favor for distutils setup
    Added Support for python3, pypy2, pypy3 - serialized_cells(reader has issues) 
    Steadiness to building options and multi build options for FsBrokers
    Added build opt -Dfsbrokers=hdfs,mapr,ceph,qfs (only specified, None or try) 
    Added build opt -Dhdfs_vers=apache-2.7.5,apache-1.1.0,apache-1.1.1,apache-1.2.1,cdh-3 etc. (if hdfs enabled)
    Added build opt -Dlanguages=js,java,php,py2,py3,pypy2,pypy3,perl,rb (only specified, None or try) 
    Java directory moved to src/java 
    Restructure of maven build with preference to bundled-jar a FsBroker and a ThriftClient
    Java ThriftClient does not require htCommon and Hadoop jars and can be joined with Hadoop-Tools
    Change of jar names and structure at lib/java ht-fsbroker-VERSION-vendor-ver-bundled.jar
    ht-set-hadoop-distro.sh options depend on available jars at lib/java ht-fsbroker-VERSION-*-bundled.jar
    ht-java-run.sh arg --cp-group  class-path-group FsBroker is the only used
    org.hypertable.Common.System.installDir is set by arg -Dht_home=
    Graphiz generate svg instead jpg
    Steadiness to some tests and adjustments
    Fixed RRDtool execution arg to --step=%u
    RangeServer "Context" changed to "RangeServerContext"
    Fixed ht_cluster SSH con steadiness and optional ../conf/ht_ssh_config 
    issue #70 Ambiguous class name Context 
    
Version 0.9.8.11:
(2016-03-14)

    Added salvage
    Added log_player
    Added metalog_tool
    Added htck
    Added ht-wait-until-quiesced.sh
    Updated copyright date
    Fixed ssl link problem with recovery tools
    Fixed bug in CellCacheScanner where scanned cells are only deletes
    Fixed bug in fast_clock::to_time_t
    Don't apply TIMESTAMP filter when scanning index tables
    Removed thread_local storage specifier from random engine variable in Random
    
Version 0.9.8.10:
(2015-12-22)

    Updated for Thrift 0.9.3, Java 1.7, gcc 5.3.0
    Added high priority reactor to AsyncComm used for UDP sockets with TOS
    Fixed regression in COUNTER cell handling
    add packaging files for python hypertable client
    Fixed clang warnings; Marked appropriate declarations override
    Added support for Hypertable.Master.RecordGraphvizStream
    Eliminated warnings
    Changed return type of FileDevice::read to signed
    Add missing try/catch blocks to some RangeServer request handlers
    Added STL-style directory container
    Added javadoc target
    Added ClusterDefinition class with system-wide System::cluster_def (and System.clusterDef for java)
    Moved ClusterDefinition code to Common
    Added --display-json option to ht_cluster

Version 0.9.8.9:
(2015-06-29)

    Fixed NO_LOG flag propagation and excessive sync'ing in TableMutatorAsync
    Fixed bad assert in ThriftBroker during scanner lookup
    gh67: Fixed RangeServer crash on shutdown
    Fixed RangeServer status reporting on empty database
    Fixed indefinite sleep problem in AsyncComm testServer
    Fixed compile issues on OSX (lack of thread_local)
    Replaced Boost random with C++11 random
    Simulate quick_exit for versions of glibcxx that don't have it
    update hypertable hyperic-sigar link broken
    Support libboost_python library location x64 arch
    Support library location x64 arch
    Replaced all occurrences of boost::xtime with std::chrono
    Added chrono::fast_clock (ClockT) for AsyncComm timing needs
    Migrated to C++11 atomic variables
    Replaced #include <time.h> with #include <ctime>
    Migrated from Boost mutex and condition variable to C++11
    Replaced boost::intrusive_ptr with std::shared_ptr
    Replaced foreach_ht with C++11 range for
    Replaced poll() with this_thread::sleep_for()
    Replaced _exit with quick_exit; Replaced numeric exit codes with EXIT_SUCCESS & EXIT_FAILURE

Version 0.9.8.8:
(2015-05-15)

    Added NO_LOG feature to allow skipping commit log write
    Added group commit to MetaLog
    issue 1196: Periodically roll MetaLog file to prevent it from getting too big
    Improved file flush logic in HDFS broker
    issue 1341: Eliminated superfluous memory copy in CellStoreScannerIntervalBlockIndex::fetch_next_block
    Added --pidfile option to performance test Client and Dispatcher
    Secondary index improvements (including performance)
    Small fix on scan and filter rows
    Fixed column predicate values that are not 0-terminated strings
    More performance improvements
    Reduced brittleness in Bad-RSML-Master-recover test
    Client side performance improvements
    Fixed bug in AsyncComm RequestCache::get_next_timeout
    Added fast numeric formatters, replacing sprintf
    Added PageArena dup overload for std::string
    Share application queues among table objects
    Cleaned up COUNTER handling code in CellCache
    Use dictionary for strings in CellsBuilder
    Reduced calls to strlen and cf spec lookups in Mutator
    Fixed path problem in auto-generated hql_types.rb
    Performance improvements in LocationCache and TableMutatorAsyncScatterBuffer
    Don't create object map entry on weak reference in ThriftBroker
    Changed strings returned by value to const reference
    Fixe MapReduce connectors for rows with non-UTF8 characters

Version 0.9.8.7:
(2015-04-02)

     gh49: Eliminated execution order problem after OperationProcessor shutdown
     Added non-blocking Hyperspace session close
     Added Node.js binding
     Fixed unhandled exception in NameIdMapper
     Moved cronolog to sbin directory
     Removed ht-backtrace.sh
     Added detailed help to all scripts with --help option
     issue 1283: Moved UPDATE_HYPERSPACE after ISSUE_REQUESTS in OperationDropTable
     issue 956: Fixed SELECT ... LIMIT 1 returning empty result set
     issue 1346: Eliminated double RangeServer recovery problem
     Added support for /etc/ssh/config and ~/.ssh/config to ht_ssh
     Fixed decoding problem with legacy OperationRecover* entities
     gh37: Fixed asynchronous connection establishment problem in ht_ssh
     gh38: Changed example cluster.def file to include core.tasks relatively

Version 0.9.8.6:
(2015-02-27)

     gh31: Fixed deadlock in Defects-issue783-offload1 test
     Fixed MML and CommitLog backward compatibility problem
     issue 1114: Made Hadoop broker respect Hypertable.Logging.Level property
     issue 1345: Added RS startup option to wait for completion of Range initialization
     Install missing header files from code reorganization
     Added missing libboost_system-mt library on Mac (Yosemite)

Version 0.9.8.5:
(2015-02-16)

     Normalized script names to start with "ht-" and program names with "ht_"
     Normalized names of client interface programs (fsbroker, master, rangeserver ...)
     Changed ThriftBroker 'status' command to conform to Nagios plugin standard
     Changed RangeServer 'status' command to conform to Nagios plugin standard
     Changed Master 'status' command to conform to Nagios plugin standard
     Added standard Nagios options to check scripts (e.g. --timeout & --hostname)
     Added support for overall system status check ht-check.sh
     Modified RangeServer::dump to include QueryCache
     Added ht.rangeserver.queryCache.waiters Ganglia metric
     Changed a few more classes to derive from Serializable
     Merge pull request #19 from grewal/v0.9.8
     Update the copyright year to 2015
     Replaced intrusive_ptr with shared_ptr in AsyncComm
     gh14: Removed spurious RangeServer log ERROR messages after schema change
     Fixed MR connector output formats to support configurable ThriftBroker host/port
     gh13: Fixed range movement problem surfaced with acknowledge_load timeout
     Changed data structure encoding format to support forward compatibility
     Added DISPLAY_REVISIONS option to SELECT statement
     Reorganized and cleaned up FsBroker code
     Set HDFS property dfs.client.read.shortcircuit.buffer.size to 128K if not set
     issue 1318: Create Range hints file if none exists and no transfer log
     Updated cmake/FindMaven.cmake to allow JDK > 1.6
     issue 1255: Consolidate transfer log code and fixed double delete problem
     Allow environment variable references in include: statement of cluster.def
     Define PACKAGE_FILE in cluster.def using HYPERTABLE_VERSION variable
     Enable slow query log by default
     issue 1335: Improved ht_cluster --help text
     issue 1333: Got rid of warning in TranslatorCode.cc
     issue 1336: Fixed \$ escaping in ht_cluster task comments

Version 0.9.8.4:
(2014-11-23)

     Cleaned up default hypertable.cfg file
     Added packaging support for Yosemite and next few versions of OSX
     Propagate table defaults from primary table to index tables
     Fixed crash in load_generator with word stream
     issue1332: Made ThriftBroker host/port configurable in MapReduce connectors
     Added java HostSpecification class
     issue1329: Fixed problem with compressor spec in old table Schema
     1328: Fixed variable expansion problem in cluster.def role definiton
     issue 1330: Added tasks to core.tasks for starting/stopping Ganglia
     issue 1328: Allow hyphen in hostnames in HostSpecification
     Addded Error::INVALID_METHOD_IDENTIFIER
     Modified CommandShell to exit with return status of last command
     Fixed bug in kill task in conf/core.tasks

Version 0.9.8.3:
(2014-10-28)

     Monitoring system - fixed JSONP rendering and YAML parsing for ruby >= 1.9
     Unset LD_LIBRARY_PATH when launching rrdtool
     Added CommandShell prefix completion and ~ expansion
     Added support for CREATE/ALTER TABLE ... WITH <schema-file>
     issue 1324: SlowQuery log crash if SlowQuery.log link already exists
     Disable slow query log by default
     issue 1325: Added missing call to ssh_init() in ht_ssh
     Search for Openssl first in default install location
     Eliminated deadlock in TableMutator::retry_flush()
     Added property Hypertable.Metrics.Ganglia.Disable
     Replaced mutex locks with atomic variables for frequently updated metrics
     Fixed alloc-dealloc-mismatch problem discovered by AddressSanitizer
     Fixed bug in cache hit rate metrics computation
     Cleaned up merge scanners; Removed unnecessary virtual methods
     Added cells/bytes Returned & ScanYield and requestBacklog metrics to RS
     Fixed bytes/cells scanned metric computation
     issue 1321: Fixed infinite loop problem in ht_ssh during connect
     Fixed EOF hang problem in ht_ssh
     Fixed read hang problem in ht_ssh
     Fixed hang problem with ht_ssh

Version 0.9.8.2:
(2014-10-08)

     issue 1310: Added ctrl-c handling to ht_ssh
     Added filename completion to CommandShell
     Added CDH5 support
     ht_cluster: added support for variable substitution in include: statements
     issue 1313: Don't dump ssh log on non-zero command exit status
     issue 1306: Fix HDFS broker to handle Ganglia port > 32767
     issue 1299: Made MapReduce connector log to stderr instead of stdout
     issue 1311: Prevent immediate maintenance scheduling for unsplittable ranges
     Made prune_tsv test independent of prior test runs
     Added ht_cluster task automation tool
     Update FindLibssh.cmake
     Changed Ganglia metric name prefix from "hypertable." to "ht."
     Added Common/Base64
     Added Common/Crypto

Version 0.9.8.1:
(2014-09-14)

     Fixed ganglia metrics bug causing last metric value to be reported indefinitely
     Added slow query log
     Renamed Common/metrics.h to Common/metrics to fix git filename case sensitivity issue on OSX
     Fixed deadlocks in ht_ssh
     issue 1264: Fixed TableSplit/RowInterval comparison in mapreduce InputFormat
     Added support for IBM BigInsights 3
     Set HDFS config dfs.datanode.socket.write.timeout to 630000
     Added support for Ganglia metrics
     Added thrift python package into installation
     Fixed problem with REBUILD INDEXES skipping first key/value
     Fixed large row METADATA scanning problem
     Added ability to limit number of initialization tasks per maintenance interval
     Added ht_ssh a mulit-host ssh automation tool
     Fixed performance problems in MapReduce connector
     issue 1266: Added symbolic links to hypertable and libthrift jars
     issue 1264: Fixed bug in mapreduce/TableSplt that caused erroneous results
     Maven'ized the Java build
     issue 127: Fixed laptop suspend problem on OSX
     issue 1027: Removed bad assert in ~IntervalScannerAsync
     Use stable_sort to sort keys in client mutator buffer
     Fixed some memory problems reported by Andy.
     Make Perl thrift Exception classes derive from Error
     Fixed bug causing GC compactions to get skipped for inactive ranges
     Pass LOAD_ALL_ENTITIES flag to MetaLog::Reader if required

Version 0.9.8.0:
(2014-06-23)

     Improved secondary index query support
     Added Cluster ID to commit log block header
     issue 1146: Change default Hypertable port numbers to be non-ephemeral
     issue 1080: Do localtime conversion for all datetime values passed through API
     Changed default Hadoop distro to cdh4
     Renamed DFS Broker to FS Broker
     Added REBUILD INDICES command
     Upgraded Thrift to > 0.9.1 (commit 816790b)
     issue 1219: Modified query cache to invalidate on row+column
     Cleaned up Schema code and HQL/Thrift schema create & modify commands
     Added methods to support printing ThriftGen::Key and ThriftGen::Cell ruby classes
     Fixed some issues discovered when building PHP API example program
     Got RangeServer::heapcheck() to dump heap stats with tcmalloc_minimal
     Fixed some issues discovered when building java API example program
     Fixed some issues discovered when building python API example program
     issue 1256: Call TableMutator::flush() explicitly in ThriftBroker; swallow exceptions in ~TableMutator
     Fixed bugs discovered when building API example programs
     Fixed schema object initialization problems
     add HypertableStorage for Pig
     Updated ThriftBroker port number in bin/start-test-client.sh
     Fixed bug in LoadDataSource with empty trailing fields
     Fixed output stream operator for Key in ThriftHelper
     Cleaned up sub operation handling in Master
     issue 1222: Fixed earliest cached revision problem in AccessGroup
     Fixed bugs in analyze-missing-keys.sh in rangeserver-failover-basic tests
     Allow COUNTER & MAX_VERSIONS if supplied MAX_VERSIONS value is 0
     Catch and log exceptions when destroying unclosed objects in ThriftBroker
     Check for NULL timeout supplied to TableMutatorAsync
     Added test for ROW intervals plus index lookup
     Got rid of build warnings (java & cpp)
     Updated lzo code to latest version
     issue 1206: Shell exceptions should report stack information only in verbose mode
     issue 1235: Prevent users from removing /tmp and /sys namespaces
     issue 1229: Fixed bad basename command in ht version
     Fixed create namespace problem when intermediate component is a table
     Properly handle case where target of table rename is a namespace
     Added ability to add/drop inidices after table creation
     Updated load_generator to reflect recent secondary index changes
     Share index update code between client lib and RangeServer
     issue 1188: Fixed race condition between Cluster ID generate and read
     Improved Master operation remove approval handling
     Removed source_machine variable and localhost role from Capfiles
     Got rid of unused merge_diff tool

Version 0.9.7.19:
(2014-06-15)

     Added HypertableStorage for Pig
     Fixed bug in LoadDataSource with empty trailing fields
     issue 1222: Fixed earliest cached revision problem in AccessGroup
     Check for NULL timeout supplied to TableMutatorAsync
     issue 1256: Call TableMutator::flush() explicitly in ThriftBroker; swallow exceptions in ~TableMutator

Version 0.9.7.18:
(2014-05-14)

     issue 1242: Fixed state init problem in AccessGroupGarbageTracker
     issue 1237: Fix stack corruption bug in dump table logic
     issue 1227: Fixed readhead problem in IntervalScannerAsync client lib class
     issue 1226: Fixed race condition in LocalBroker::readdir()
     Fixed future/scanner/mutator close order problem causing ThriftBroker crash
     Added better error state capture to rangeserver-failover-basic tests
     Removed bad assert in AccessGroupGarbageTracker

Version 0.9.7.17:
(2014-03-17)

     Set SO_KEEPALIVE on TCP sockets
     issue 1202: If target of RENAME TABLE exists, terminate operation with error
     Throw exception on invalid key timestamp (TIMESTAMP_NULL) in TableMutatorAsync
     Upgraded to CDH4.6
     issue 1193: Fixed bug in RangeServer::log_replay()
     Added package_gcc.bash to src-utils
     Fixed alloc/dealloc mismatch in Hypertable-shell-ldi-select test
     Fixed QFS broker
     Reverted back to single cell cache in access group
     Cleaned up access group garbage tracking logic
     Fixed potential loss of transfer log during failover
     Fixed missing dependency problem

Version 0.9.7.16:
(2014-02-16)

     Upgraded to C++11 compiler
     issue 1179: Fixed insert perf problem introduced by bad commit in 0.9.7.13
     issue 1193: Fixed split_row/end_row comparison in Range::estimate_split_row()
     Fixed memory leak in index table mutator
     Avoid aggressive merging during low memory mode
     Fixed BalancePlanAuthority::change_receiver_plan_location() to properly increment generation
     issue 1191: Fixed DEB and RPM package installation
     Fixed alloc-dealloc-mismatch error in hypertable_ldi_select_test
     Fixed HQL-delete test
     Fixed Spirit parser issues
     issue 1104: Fixed intermittent failure of issue190 test
     issue 1123: fixed ldd.sh script
     Got rid of INFO log message in OperationRecover::decode_state()
     issue 1193: Replaced assert with instrumentation logging
     issue 1189: Propagate exceptions from ~TableMutator()
     Modified issue890 test to compile java file into build directory
     Modified Filesystem::readdir to return vector of Dirent structures
     Reverted "merging compactions ahead of minor compactions" commit
     Allow arbitrary column selection for secondary index queries
     issue 1032: Fixed COUNTER columns "wrap around" on underflow problem
     Added NO_CACHE option to SELECT statement

Version 0.9.7.15:
(2014-01-10)

     Fixed QFS Broker
     issue1159: Fixed CellStoreBlockIndexArray::fraction_covered() bug
     Made merging compaction algo more aggressive during low activity period
     Added commons-lang-2.5.jar to fix missing symbol under CDH4.5
     Added TimeWindow class for defining low activty window
     Prioritize merging compactions ahead of minor compactions
     Moved sys/RS_METRICS reading code to Hypertable/Lib/RS_METRICS
     Fixed memory alignment issues with DfsBroker.Local.DirectIO=true
     Fixed quote trimming problem in HqlParser
     issue 1180: Fixed intermittent Client-periodic-flush failure
     issue1063: Made Defects-issue783-offload1 test more robust
     Throw exceptions in SerializedCellsReader/Writer on empty row key
     issue1175: Fixed bug when supplying LIMIT with ROW interval

Version 0.9.7.14:
(2013-12-05)

     Fixed buffer overflow in RangeServer when returning large counter values
     Fixed bug in ThriftBroker shared mutator key that prevented sharing
     Use random start time for periodic flushing of shared mutators
     Upgraded to CDH4 version 4.4.0
     Added Hypertable.RangeServer.CellStore.SkipBad property
     issue 1171: Fixed RangeServer::get_statistics() request pile-up
     Fixed QueryCache insert race condition
     Added state logging for issue 1159
     issue 1138: Fixed DELETE bug on specific cell version w/o qualifier

Version 0.9.7.13:
(2013-10-29)

     Fixed crash in ThriftBroker when passing in bad object ID
     Fixed monitoring UI table detail graph rendering for nested namespaces
     Fixed bug in FileBlockCache key computation for offsets >= 2^32
     Fix Hyperspace reconnect if machine suspended; Only perform Master timer ops if Hyperspace session state is SAFE
     Added do_not_cache member to ScanSpec
     Fixed AccessGroupGarbageTracker to avoid repeated unnecessary garbage checks
     Added java counter test
     issue 1160: Throw exception on bad counter column option combinations in schema parse
     issue 1161: Fixed bug in Java SerializedCellWriter.add_delete()
     Cleaned up FragmentData class and added doxygen comments
     issue 1156: When performing GC compaction, measure actual garbage before proceeding
     issue 1155: Throw exception during CREATE TABLE on bad column option combinations
     Fixed potential object ID collision in ThriftBroker
     Added Hypertable.RangeServer.Range.IgnoreCellsWithClockSkew property
     Lazily initialize group commit
     issue 1154: Fixed HQL help text for ALTER TABLE MODIFY

Version 0.9.7.12:
(2013-10-06)

     issue 1151: Fixed phantom range log problem causing commit log from getting reaped
     Fixed scanner leak in ThriftBroker::get_cells* methods
     Fixed recently intro'd bug in ThriftBroker when opening namespace multiple times
     issue 1124: Fixed bug in counter logic causing resets to become increments
     Added compaction TYPE option to COMPACT HQL command
     issue 845: Added ability to change MAX_VERSIONS and TTL with ALTER TABLE
     issue 1152: Eliminated consistency problems on exception during compaction
     Improved maintenance scheduler debug trace
     Fix to recent ThriftBroker change to allow connection pooling
     Increment parent reference count only if fragment is added in CommitLogReader
     Create phantom log in directory _xfer
     Fixed a problem with dumplog --linked-logs
     Got rid of log message in OperationRecover constructor
     issue 1150: fixed bad Hyperspace attr_set assert
     Hyperspace cleanup and doxygen comments
     issue 1149: Got rid of lock contention in AccessGroup::include_in_scan()

Version 0.9.7.11:
(2013-09-24)

     Fixed object leak in ThriftBroker
     Close hints file after read (file descriptor leak)
     Added missing SystemState entity construction in MetaLogDefinitionMaster
     Fixed server registration/recover race condition in Master
     issues 1069 & 1143: Fixed load_range() timeout bug and drop table races
     Retry with verify_checksum if trailer is bad in CellStoreFactory
     issue 1107: Fixed Future::get() API timeout bug
     Fixed Master bug not passing BalancePlanAuthority to MetaLog::Writer constructor
     issue 1147: Fixed consistency problem in relinqish on move_range() exception
     Removed bogus assert in recovery callbacks; Fixed sigstop failover test
     Fixed Hyperspace lost notification bug
     Reorganized Hyperspace source directory layout
     Fixed hyperspace reconnect issues
     issue 1144: Fixed erroneous skipping of transfer log removal
     Added comments to and cleaned up OperationCompact
     Send notification on new server registration or clock skew error
     In Master recovery callbacks, discover proxy via RSC manager if NULL in event
     Added version number to Operation entity plus doxygen comments
     issue 1083: Removed leading '/' in table name in monitoring UI after rename
     issue 1085: Added --nodeps to rpm install in Capfile
     issue 1135: Fixed problem with monitoring shutdown on certain thin versions
     Increased MetaLog historical archive from 10 to 30
     issue 1134: Fixed assert in RangeServer::phantom_prepare_ranges() on big recovery
     Fixed problem of OperationRecover entities spamming the MML
     Added support for .tar.gz package installation in Capfile
     Added hostname to RangeServerConnection display string
     issue 1133: Added HQL help text for .tsv DELETE support

Version 0.9.7.10:
(2013-08-27)

     Better support for Hadoop 2 (CDH4)
     Fixed bug in Master Version rendering in monitoring UI
     Fixed problem with hints file reading
     issue1034: Hadoop 2 - Recover file lease and retry if open throws IOException
     Added Hypertable.Cluster.Name property
     issue 1126: Better handling of bad RSML
     Fixed ambiguity in .tsv DELETE specification
     issue 1128: Fixed RangeServer create scanner crash on bad cell_interval spec
     Minor fix to LocalBroker::posix_readdir
     Removed spurious notification message
     issue1125: Fixed AccessGroup-garbage-tracker test

Version 0.9.7.9:
(2013-08-15)

    QFS Broker
    Improved disk usage monitoring and handling
    Added system state with READONLY variable and HQL SET command
    Changed Hypertable.RangeServer.Range.SplitSize default to 512MB
    Fixed bug in delete processing in MergeScannerAccessGroup
    Fixed CELL_LIMIT processing
    Fixed level calculation in MaintenanceQueue
    Reduced calls to Range::get_maintenance_data() in get_statistics()
    Added version, start_row, and end_row to hints file
    Moved tranfer log to corresponding /tables/ directory
    Fixed race condition in creation of RemoveOkLogs entity
    Changed "dropping task" log message from WARN to INFO
    Fixed race condition in RangeServer-failover-restart test
    Better error state capture for group commit and rs failover basic tests
    Replaced RSStats with LoadStatistics class
    Added server disk usage statistics to RS_METRICS
    Fix tests
    Added PosixReaddir to DfsBroker interface

Version 0.9.7.8:
(2013-07-02)

    Skip recovery of ranges from deleted tables; Other failover fixes
    issue 1088: Fixed connection purging issue in ConnectionManager
    issue 1091: Skip RSML entries if schema for table not found
    issue1094: Fixed race condition in Global::remove_ok_logs initialization
    Can build on more systems
    Fixed malformed path in dumplog --block-summary output
    issue1093: Hypertable shell now opens '/' namespace by default
    issue1082: Changed shell --timestamp-format option from usecs to nanoseconds
    Added missing header files in installation
    Got rid of unnecessary clearing of IOHandler proxy
    Added support for alternate field separator in .tsv format
    Added TableSchema.xsd
    Fix a typo: determinte -> determine
    Capture error state in master-failover tests

Version 0.9.7.7:
(2013-06-03)

    Automatically upgrade table generation during range recovery
    Added missing MML decoding of OperationCompact entity
    Don't decomission handler after propagate_proxy_map() failure
    Added id() accessor method to MetaLog::Entity class
    Batch entity writes in MetaLog::Writer constructor

Version 0.9.7.6:
(2013-05-23)

    Fixed stuck CommitLog purge problem
    Added COMPACT command
    Added NO_TIMESTAMPS option to DUMP TABLE command
    Added hints file to range directory to bootstrap AccessGroup state
    Removed deadlock in Range::create_scanner introduced w/ deferred init commit
    Fixed source server state tracking for consistent MasterClient::move_range calls
    Added "current" set to BalancePlanAuthority serialization
    Fixed MetaLog writer encoded_length/encode race condition
    issue 1068: Fixed race condition in creating IOHandlerData
    Fixed multiple BalancePlanAuthority creation problem
    Fixed bad string create in TTL parsing
    Fixed bug in metalog_dump that prevented it from working on HDFS
    Remove connection from ConnectionManager unconditionally on invalid proxy
    Added methods to BalancePlanAuthority for metalog_tool + doxygen comments
    Fixed "Created DB handles" logging output in Hyperspace
    Added test - ROOT RangeServer failure with cluster restart
    Only set urgent bit on phantom_update if for metadata

Version 0.9.7.5:
(2013-05-03)

    Fixed split row estimation bug (CRITICAL)
    Fixed problem with RPM package
    issue 934: Defer CellStore loading (eliminate METADATA table access on startup)
    Reset state to INITIAL in OperationRecoverRanges on PHANTOM_RANGE_MAP_NOT_FOUND
    Allow mid-recovery servers to be added back into pool of RangeServers
    Added memory tracking to recovery
    Allow MasterClient to be constructed before Master is live
    Fixed RelinquishAcknowledge early expiration bug
    Fixed uninitialized m_recovering member of RangeServerConnection
    Remove pending recover operation for re-connected server
    Fixed master shutdown
    Changed LoadMetadataOnly property to LoadSystemTablesOnly
    Added support for Hypertable.Failover.RecoverInSeries
    Fixed a delete issue caught by AddressSanitizer
    More doxygen comments
    ScanSpec column predicate validation fix
    Removed ReferenceCount base class of IOHandler
    Change name() of OperationRecover to match class name
    Changed ERROR message to WARN
    Fixed llvm build for Mac OSX

Version 0.9.7.4:
(2013-04-24)

    Added periodic reporting during failover replay fragments to prevent timeouts
    Fixed AsyncComm proxy map propagation / connect() order problem
    Capfile changes to facilitate starting/stopping ThriftBrokers independently
    Increased failover timeout to 5 minutes and MaxAppQueuePause to 2 minutes
    Fixed memory errors caught by llvm AddressSanitizer
    Added support for llvm compiler; Fixed warnings reported by llvm
    Doxygen comments
    Removed unnecessary files
    Added doxygen comments to src/cc/Common
    Fixed %preun specification in RPM packaging
    Added --shared-mutator-flush-interval to load_generator
    Eliminated compiler warnings
    Fixed integration test METADATA-split-recovery-11
    issue 1038: Stop connect retry attempts to recovered server (part 2)
    Removed unused files
    issue 1052: removed dependency to log4cpp

Version 0.9.7.3:
(2013-04-09)

    Fixed bug in MaintenanceScheduler preventing merging compactions
    Turn off low memory mode in TimerHandler when no longer low on memory
    Fixed merge run calculation logic
    Fixed epoll initialization error on Ubuntu 12.10
    Improved maintenance scheduler debug output
    Added doxygen comments to src/cc/Common
    Fixed small bug in PHP microblog sample

Version 0.9.7.2:
(2013-04-04)

    Fixed bug in maintenance queue causing worker thread count to drop to 1 over time
    Fixed CellStore concurrency and divide-by-zero problems
    issue 1038: Stop connect retry attempts to recovered server
    Added support for .cellstore.index pseudo-table
    Schedule log cleanup compactions ahead of merging compactions
    Rotate starting point in maintenance scheduler to avoid compaction starvation
    Removed absolute path in jrun script
    Implemented pure virtual function for older CellStore format
    issue 991: added refresh_table to the Thrift interface
    issue 999: needs_compaction bit not getting cleared
    htpkg - don't build thriftbroker-only packages by default
    Maintenance scheduler overhaul; Pause app queue if prune threshold exceeded by 20%
    Improved CommitLog purge break log message
    Only wait for system range recovery in RangeServer::phantom_ methods
    Got rid of exception output for INFO messages (HT_INFO_OUT)
    Removed dependency to log4cpp
    Added doxygen comments to src/cc/Common
    Added Hypertable.RangeServer.Maintenance.LowMemoryPrioritization property
    Finished adding doxygen comments to AsyncComm
    Fixed balance plan server assignment problem
    Fixed hang problem in ~TableScanner on scanner errors
    Fixed handling of missing transfer log directory in PhantomRange
    Fixed problem with explicitly supplied timestamps and TIME_ORDER DESC
    Changed "tar -xjv" to "tar xjv" in Capfiles
    Checked in auto-generated code from recent Thrift changes
    Added two-serial-failover test
    Re-enable load balancer
    Got rid of deadlock in AsyncComm

Version 0.9.7.1:
(2013-02-28)

    Prevent erroneous RangeServer recovery on startup
    Fixed rounding problem in quorum calculation
    Fixed bug in CELL_LIMIT handling
    LoadBalancer no longer assignes ranges to non-existing servers
    Modified upgrade.sh to copy notification-hook.tmpl
    Got rid of doxygen warnings and added more comments

Version 0.9.7.0:
(2013-02-11)

    RangeServer failover
    Added ability to switch Hadoop distros (cdh3 or cdh4)
    issue 958: shell now accepts unicode characters
    Fixed Namespace::open_table race condition
    issue1017: Fixed assert in CS bloom filter creation with small # of keys
    Fixed argument parsing in WikipediaWordCount.java mapreduce program
    Improved split row estimation logic
    Fixed tests by removing .pid files after kill
    issue976: fixed rows+cols bloom filter access with qualifier regex
    Added update_without_index
    Hypertable Shell test no longer fails if it is restarted
    issue 986: catching mapr-specific error code
    issue 974: Thrift clients now verify that ScanSpec is valid
    issue 947: check_integrity no longer fails if a table is empty
    issue 989: do not allow creating indices with COUNTER columns
    issue 972: changed ERROR message to INFO
    issue 970: fixed potential segmentation fault in CommandShell
    Fixed a compiler warning in release mode
    issue 963: fixed thrift framesize property mismatch
    issue 961: fixed SHOW CREATE TABLE with group_commit_interval
    Fixed compiler errors on g++ 4.7.2
    Added Hypertable.RangeServer.Range.RowSize.Unlimited

Version 0.9.6.5:
(2012-10-22)

     issue957: Fixed group commit assert
     issue 942: Fixed metadata-split tests on 32-bit
     Fixed problem of purging RangeServerConnection entries on startup

Version 0.9.6.4:
(2012-09-19)

     Fixed bug in memory reporting introduced with TinyBuffer allocator
     Ensure single RangeServerConnection entity in MML for each connection
     Eliminated conflict with VERSION identifier in SerializedCells*
     issue 923: Fixed RangeServer master initialization error reporting
     Fixed timestamp_max calculation in CellStoreV6
     issue 938: fixed propagation of row overflow error
     Eliminated warnings

Version 0.9.6.3:
(2012-09-10)

     Added missing error code initialization to Result constructor
     Changed CommitLog.FragmentRemoval.RangeReferenceRequired default to false
     Made CommitLog::purge() less chatty
     issue 939: Fixed monitoring system Master version number display
     Remove transfer log when Ranges are deleted due to drop table
     Fixed METADATA split test

Version 0.9.6.2:
(2012-08-30)

     Fixed race condition with ResultCallback m_outstanding counter
     issue 932: thrift framesize is now configurable
     issue 921: fixed escape problem for streaming mapreduce
     issue 922: refresh internal table info when a table was dropped and re-created
     Avoid using hard-coded paths in a java thrift test
     Added a C++ example for SerializedCellsWriter/SerializedCellsReader
     Added a tool to convert all command line parameters to html
     Fixed load_generator's usage of the thrift mutator
     Fixed hql interpreter leak in ThriftBroker
     issue 915: gracefully handle BDB errors when creating transactions
     issue 915: fixed crash in TableMutatorAsync when using an invalid COUNTER value
     ht_load_generator now supports parallel queries
     Couple ByteArena to the RangeDataVector
     Fixed potential access violation when installing new cell cache
     Fixed DUMP TABLE COLUMNS spec to match SELECT
     Fixed documentation bug in CREATE TABLE: the default compression for cellstores is snappy
     issue 910: fixed DELETE handling in combination with row limits
     issue 907: fixed assert in master when replacing a RangeServer with a new machine
     issue 912: fixed deadlock during master shutdown

Version 0.9.6.1:
(2012-08-16)

     Fixed open problem with MapR broker
     issue 892: Fixed intermittend data loss (rare) in balancing-mechanics test
     Fixed FileBlockCache to handle large (> 4GB) CellStore files
     Don't sort block index on load (was causing out-of-order problem on equal keys)
     Fixed issues with HyperPython build and packaging
     issue 914: Fixed problem where Master was writing bad MML entries
     Fixed a test which lacked some error checks
     PageArena improvements for low-memory systems
     issue 835: add --skip-thriftbroker to htpkg
     issue 902: fixing access to uninitialized data when creating RangeServer statistics
     issue 827: fixed deadlock when deleting an index scanner
     issue 409: removed old and unused MapReduce code
     issue 533: fixed VERSION_ADD_COMMIT_SUFFIX if current commit is same as the last tag
     issue 300: removed hardcoded RangeLocator constants
     issue 40: better startup script errors
     issue 908: Fixed IndexOutOfBoundsException in DiscreteRandomGenerator
     Don't link against tcmalloc on mac
     Added csvalidate
     Changes to support Boost 1.50
     Added Scrooge installation commands to build-setup scripts
     Don't include libunwind on 32-bit platforms
     Removed version verification check
     issue 895: Fixed apache_log_load example
     issue 885: BytesWritable writes trailing garbage back to Hypertable
     Support for multiple column predicate added, new op CONTAINS added, bug fixes
     Crash fixed if cell buffer grows
     Got rid of build.xml warnings
     Added process ID to valgrind filename
     Fixed two tests
     issue 880: increased logging output in case of errors
     Fixed build issues on 32-bit and mac

Version 0.9.6.0:
(2012-07-23)

     Fixed zero-length hdfs log file issues
     issue 876: fixed rangeserver crash if request times out
     issue 863: Fixed interference problem with Master/RangeServer init handshake
     issue 884: Fixed problem in CommitLog that caused orphaned transfer logs
     Improved shutdown() to avoid segfaults
     issue 887: Fixed deadlock in Master inside DispatchHandlerOperation
     issue 855: added protocol version to Hyperspace
     Fixed problem that could prevent MoveRange from being removed in Master
     issue 873: bulk atomic counter resets resulting in incorrect values
     Fixed null reference in MapReduce Input class
     issue 866: qualifier index now working with very large result sets
     issue 876: fixed AsyncComm crash when handling expired messages
     Fixed race condition that caused transfer log to be removed prematurely
     Added better error state capture to Balancing-mechanics test
     Java ThriftClient can now specify max thrift frame size
     issue 890: java SerializedCellsWriter add() function should accept at least one cell
     Updating debian dev build setup
     Fixed endless loop when running load balancer with unknown algorithm
     Fixed mutex protection for m_metalog_entity member of Range class
     Added a 'compact' mode to csdump
     Do not generate core file when Hyperspace session expires
     issue 879: added cronolog to ThriftBroker package
     issue 881: added diagnostics output to track load_acknowledge flag
     Display /proc/sys/vm/swappiness in start-rangeserver.sh
     Added libunwind to install and packages
     Fixed two build issues that turned up on 32-bit
     Improved Balancing-mechanics test and fixed brittleness
     Added DfsBroker.DisableFileRemoval property and support in localBroker
     issue 858: created a tool that checks the integrity of a cluster
     Added STOP command to shutdown a rangeserver
     Java Thrift sample now prints cell values instead of ByteBuffer statistics
     issue 869: get_property tool can now print integer properties
     issue 840: upgrade-ok.sh now works with trailing slashes
     issue 851: RangeServer fails to start if METADATA.xml or RS_METRICS.xml is missing
     issue 862: CellStoreFactory now prints messages on error
     Added timestamp and "app queue pause" info to query profile output
     issue 861: added new property Hypertable.Monitoring.Disable to disable rrdtool
     Equal sign is now optional when specifying HQL options
     Fixed uninitialized memory access in MetaLogWriter
     issue 843: fixed hang in qualifier index lookup with CELL_LIMIT predicate
     issue 838: TableMutatorAsyncScatterBuffer used m_timer across multiple operations
     Added support for query profiling (updates) in RangeServer
     Fixed csdump --tsv-format to include header line, timestamp, and escape
     Made dfs file close synchronous in MetaLogWriter
     Added Hypertable.RangeServer.LoadMetadataOnly property
     Fixed link order build issue with libHyperPython
     Changed log message when reading a corrupt cell store
     issue 754: the HQL keyword REVS is now deprecated
     issue 844: libHypertable.so is now properly installed
     issue 841: mop.jpg is now written correctly
     Fixed a bug in the SerializedCellReader test
     issue 842: do not use indices if row interval is specified
     issue 783: balancer now factors in the disk capacities
     issue 833: added newest fields to ScanSpec.java
     issue 823: VALUE REGEXP scan now works with qualifier index
     Fixed spurious failures of test Purge-indices-2
     Modified clean-database.sh to remove mml backup
     issue 828: all HQL statements are now case-sensitive (exit, quit, print...)
     issue 836: add jitter to 'cap hyperspace_status' to avoid hyperspace/BDB deadlocks
     issue 816: serverup now recognizes masters which try to acquire the hyperspace lock
     issue 777: stop-servers.sh can now stop individual processes
     Fixed hang problem on RangeServer shutdown
     Fixed problem with DFS verify_checksum logic
     Fixed monitoring graphs and added ulimit -v unlimited to ht-env.sh
     Fixed NullPointerException in mapreduce/InputFormat
     issue 820: Python bindings for SerializedCellReader/Writer     - added version information     - collapsing duplicat
     issue 822: Removed code that skipped an error
     issue 827: fixed deadlock when scanning secondary indices
     issue 815: remove rrdtool from the installation package
     Replaced links to hypertable.org with hypertable.com
     issue 749: ignore BAD_PATHNAME exception when DUMPing a file in hyperspace shell
     Fixed spurious failures of test Purge-indices-2
     issue 817: fixed handling of DELETE in LOAD DATA INFILE
     issue 727: new config setting HdfsBroker.Hadoop.ConfDir
     issue 731: added new ScanSpec options to hadoop streaming mapreduce
     issue 700: update to boost 1.49
     issue 811: update mml if RangeServer address or IP changes
     issue 812: improved error message if hyperspace replica host names are invalid
     issue 775: replaced readline with libedit
     issue 797: removed old metalog-code
     issue 792: improved thrift tests for perl, python, ruby
     issue 565: added IF NOT EXISTS option to CREATE NAMESPACE
     issue 802: removed unused function
     Fix crash due to ScanSpec copy
     Check for invalid table name characters
     Added minor cleanups and performance improvements
     Modified CellCache to prefer new exact key inerts over old ones; Better FileBlockCache hash

Version 0.9.5.6:
(2012-03-21)

     Added support for secondary indices
     Fixed rowkey-ag-imbalance test (again); Elimated warning
     Added a new test for prefix scans w/ indices
     Improved performance of TableMutatorAsync if indices are used
     issue 701: fixed ambiguous format() call
     Added some missing "prefix qualifiers" assignments
     Added reinterpret_cast to eliminate warning on some platforms
     Fixed HyperAppHelper tests to avoid global destruction order problem
     Fixed shutdown problem
     Eliminated warning in QueryCache.h
     Fixed RangeServer::shutdown(), removed RangeServer::close()
     Fixed RangeServer-rowkey-ag-imbalance regression test
     Fixed bug when collecting data from a temporary index table
     Fixed bug in ScanSpec operator<<(std::ostream function
     issue 793: CREATE TABLE now works with fully qualified table names
     issue 738: SELECT a, a:foo used to ignore all cells without qualifier
     Disable checksum verification for random block reads
     Enable dfs.client.read.shortcircuit in HDFS broker
     Fix ScanContext exact qualifier set
     Graceful shutdown of RangeServer
     Gracefully shutdown Hyperspace
     Use dedicated timer reactor
     Updated to CDH3u3
     LoadGenerator can now generate queries which use cell value index or qualifier index
     LoadGenerator can now read words from text file as cell values
     Fixed a race condition in IndexScannerCallback/IndexMutatorCallback
     Retry bind() call in event of failure in Comm::listen
     Added ability to store _compressed_ blocks in block cache
     Split CellCache into Read and Write caches to minimize contention
     Fixed double-free in IndexUpdater
     issue 444: Moved logic for IGNORE_UNKNOWN_COLUMNS from TableMutator to HqlInterpreter
     issue 779: Fixed upgrade-ok.sh for 1.0.0.0
     Removed an unused function
     Fixed path of rrdtool; now using System::install_dir instead of
     Added CellCacheManager to AccessGroup
     issue 756: Fixed problem with auto-assigned revision number not strictly increasing
     issue 796: Added CellStore V6 with trailer checksum
     Fixed bug in java DiscreteRandomGenerator
     Fixed typos in help text
     Copy Thirft perl module into installation; Fixed Ruby and perl examples
     Removed PHPTHRIFT_ROOT in favor of THRIFT_SOURCE_DIR
     Race condition fixed in TableMutatorAsync
     Fix SendRec comparison operator in TableMutatorAsyncScatterBuffer.cc
     Changed monitoring UI to pull rrdtool from installation
     Added key sanity check to Range::add
     issues 785,776: Fixed METADATA tests; Added default value for Hyperspace.Replica.Workers
     issue 778: use new-style python classes for Thrift API
     Fixed Master SystemUpgrade to re-open metadata_table and rs_metrics_table
     Fixed array write overrun in Range introduced with FLAG_DELETE_CELL_VERSION
     Fixed initialization problem in Client
     Added missing parameter to create_mutator_async() in ThriftBroker
     Only copy PHP files if PHPTHRIFT_ROOT defined
     Fixed circular dependency when building shared libraries
     Fixed Thrift compilation errors due to missing stdint.h

Version 0.9.5.5:
(2012-01-30)

     Upgraded to Thrift 0.8.0
     Issue #760: Changed LICENSE.txt and copyright header in sources to GPL v3
     Added ability to disable block cache; Disabled it for now
     Fixed concurrency problems in TableMutator classes
     Fixed deadlocks in update path
     Fixed race condition leading to deadlock in TableMutator
     Fixed error propagation in scanner
     Only account for QueryCache fill in MemoryTracker
     Fixed BlockCache problem when not enough room to hold block
     Improved response time if TableScanner recovers from RANGESERVER_RANGE_NOT_FOUND error
     More updates to PerformanceTest
     Added missing member initialization to ScanSpec constructor
     Got rid of unused function
     Fixed qualifier regex logic
     Fixed mis-interpretation of CREATE_INTERMEDIATE in Client::create_namespace
     Fixed bug recently introduce in the update path
     issue 773: Removed deadlock in TableMutatorAsync
     Fixed bug recently introduced in PerformanceTest causing value-data file to be null
     Issue #766: cronolog is now packaged into /bin directory
     Issue #734: Removed dependency to librrd
     Added BlockCount field to METADATA table
     Improved integration tests; several tests are now running more reliable
     Added memory mapped CMF data file for Zipfian random number generator
     Issue #484: Added a regression test
     Issue #743: Added function error_get_text which returns a string describing an error number
     Issue #672, #758: Serverup tool now connects to local master instead of the one listed in hyperspace
     PerformanceTest improvements; Got random read tests working
     issue 745: fixed missing dependency problem on mac
     Added additional 3 second clock skew leeway in Master register server
     Made RangeServer::acknowledge_load request URGENT
     issue 754: Added support MAX_VERSIONS <n> (e.g. without '=')
     Modified Hypertable perftest to run over multiple interfaces
     Added missing Thrift Client interface libraries to installation
     Updated Thrift client_test examples to reflect recent API name changes
     Fixed thrift-reconnect-hyperspace test

Version 0.9.5.4:
(2011-12-21)

     Added MapR broker
     Patch to fix hang problem in low memory condition
     Atomically get multiple attribute values in Hyperspace
     issue 744: Renamed thriftbroker package to thriftbroker-only
     Thrift API name changes
     More Thrift API Name changes (hql_ and offer_ to shared_mutator_)
     Fixed segfault on dfsclient with shutdown command
     issue 732: Fix to stop-servers.sh to shut down DFS broker cleanly
     Changed # of maint. threads to max(1.5*disks, cpu_core_count)
     issue 745: Hack to copy missing libintl.8.dylib on mac
     Fixed thrift-table-refresh test (forgot to reflect Thrift API changes)
     More fixes to PerformanceTest code
     Got rid of recursion (and possible stack overflow) in MergeScanner
     Added generate_error_code_doc tool for auto-generating Error Codes docs
     Cleaned up Thrift API Names
     Added elapsed seconds to java vertical progress meter
     Fixed bug in Boost uuid wrapper
     Fixed bug in java String de-serialization routine
     Fix for crash in scan with cell_interval and end_row=0
     Added TIME_ORDER DESC markdown documentation
     issue 728: Use Boost UUID generation libaray

Version 0.9.5.3:
(2011-11-21)

     Added support for OFFSET, CELL_OFFSET
     Fixed bug in TableInfo
     Fixed bug in Monitoring class where the last and current server sets were incorrectly compared.
     Added support for TIME_ORDER DESC and HyperAppHelper::create_cell_unique for the PHP microblog sample
     Added support for chronological timestamps and unique values
     Andy's Hyperspace performance improvements
     Added support for .tar.bz2 to install_pkg Capfile task
     Changed Mac package name to include OSX version number
     Fixed missing library dependency on Mac OSX Lion
     Added OFFLOAD algorithm to basic load balancer, to move ranges of a list of servers.
     Updated performance test with latest HBase and Zookeeper
     Added regression test for issue #719
     Fixed issue #720: LOAD DATA INTO FILE now skips empty values
     Fixed CELL_LIMIT_CF prob in ThriftBroker; Updated documentation
     Prefetch schemas from Hyperspace to speed up local recovery in RangeServer
     Fixed issue #718 - cpp thrift client is now installed in /lib/cpp

Version 0.9.5.2:
(2011-10-24)

     Fixed bug in balancer that caused Master crash on pre-existing DBs

Version 0.9.5.1:
(2011-10-17)

     Added Snappy compression, made it default for CellStores
     Upgraded to Thrift 0.7.0
     Upgraded to Hadoop CDH3u1
     Added CELL_LIMIT to ScanSpec and SELECT command
     Renamed CELL_LIMIT to CELL_LIMIT_PER_FAMILY
     Made range split size random value SplitSize + (RamdomNumber % SplitSize)
     Fixed bug in RangeServer::local_recover()
     Added check for clock skew in OperationRegisterServer
     Added CPU statistics to range server monitoring graphs
     Fixed bugs in Balance operation.
     Fixed bug in LoadBalancerBasic.
     Changed TableInfo to store range start and end row.
     Fixed bug in RangeServer, whereby it was possible for it to incorrectly return TABLE_NOT_FOUND.
     Fixed performance test Capfile so that Client can run on same machine as Master
     Added support for pulling value data from file in PerformanceTest
     Added dependent libs to fix missing shared object problem on Debian
     Added scripts for setting up build env on CentOS, Debian, and OpenSUSE
     Added new switch --namespace to the shell to automatically open a specified namespace
     Fixed command line parameter -h which failed to display the help page
     Fixed a compiler warning about missing parentheses
     Fixed a typo when calling 'help' with an unknown argument
     use getenv() instead of _ENV, since _ENV can be disabled in php.ini
     Modified Range class to prevent further maintenance if relinquished
     Added in_operation bit to master.
     Fixed monitoring diff calcuations, only compute if server set same as previous
     Changed the balance trigger on the master.
     Changed RangeServerConnection state member to include BALANCED bit
     Made OperationBalance a perpetual operation.
     Added FailureInducer label to crash the master in the middle of executing a balance.
     Added automatic update coalesce
     Separate controls in Capfile for stop and clean prompt; Dropped countdown
     issue 706: Fixed initialization problem of Range member removed_from_working_set
     Changed a misleading error message.
     Added Ajax counter which displays the number of new tweets. Also improved error reporting if HT is not running or no
     issue 696: patch to previous fix
     issue 704: fixed intermittent CellStore-garbage-collection test failure
     Set default # of maintenance threads to 1.5 * number of drives in system
     Changed commit log compressor back to quicklz
     Got rid of BLOCKED state in Master operations in favor of blocked bit
     issue 696: Fixed race condition in Master handling of relinquish acknowledge
     Fixed monitoring rate calculation problem when get_statistics fails on some RSs
     Added initial revision of the microblog php sample to the reporitory
     Added table id to error message
     Added cell_limit and cell_limit_per_family to Thrift ScanSpec operator <<
     Future cancel individual scanners/mutators test added
     Future issues fixed
     Added ThriftBroker APIs cancel_mutator_async(mutator) and cancel_scanner_async(scanner)
     Thrift API change. Removed flush argument from close_mutator call
     Changed default compressors to snappy
     Don't remove monitoring data in clean-database.sh
     Fixed possible problem with request timeout calculation; Added bettter logging
     Changed exception and api call logging in ThriftBroker.
     Fixed bug in snappy codec
     Got rid of arrival_clocks in favor of arrival_time in Comm layer
     Fixed shutdown hook in HdfsBroker
     Changed exit calls to _exit to prevent core dumps on async abrupt end tests
     issue 691: During relinuish, if range removed from live set, set flag to prevent re-removal
     Added property Hypertable.RangeServer.IgnoreClockSkewErrors to make RangeServer ignore clock skew errors.
     Fixed a PHP warning because of an undefined variable (E_NONE)
     Fixed library paths and names on Ubuntu 11.04 64bit
     Removed a PHP warning if an environment variable is not set
     Eliminated warning
     Added regression test for balance operation when a new rangeserver is added.
     Minor thriftbroker issues fixed
     Fixed bug in TableScannerAsync
     Enhanced FailureInducer to support throwing arbitrary exceptions.
     Added FileUtils::mmap and use it to map source file in load_generator
     Merging Sanjit's regex patch
     Dropping tables before creating them; otherwise test fails if they already existed
     Fixed wrong event timeouts on 32bit linux: clock_t is signed long but was compared against unsigned int. Also beauti
     Refactored MergeScanner and split in two classes: MergeScannerAccessGroup and MergeScannerRange. No functional chang
     Fixed intermittent NULL pointer dereference in master recently introduced
     Fixed progress meter logic for large datasets (>4GB)
     Copy libsnappy into installation
     Fixed linker errors on ubuntu 11.04/cmake 2.8.3: thrift files were generated but neither compiled nor linked
     Fixed sigar detection: link against ldl on Linux
     Added missing files for snappy integration
     Added support for google's snappy compression library
     fixing more warnings about macros used with empty arguments
     fixed warning about empty macros
     fixes for ubuntu 11.04 (32bit)
     always link with -ldl
     Plumbed CELL_LIMIT_PER_FAMILY through ThriftBroker
     Added version info to monitoring UI; Removed hardcoded monitoring dir reference
     Reorganized library layout.
     Added four levels to Maintenance queue to allow METADATA to be handled before USER, etc.
     Fixed intermittent test failures
     Fixed intermittent prune_tsv test failure
     Added cmake support for BerkeleyDB 5.2
     issue 688: Set proxy name member for comm layer TIMEOUT events
     Added DUMP command to Hyperspace shell.
     Made change to ThriftBroker to flush asynchronous mutators if there is enough to flush.
     fixes to_full_key if FLAG_DELETE_ROW has been specified
     - support bdb 5.2 (replication API changes)
     Andy's patches for a few 0.9.5.0 issues.
     Enabled use of DFS replication factor.
     Added config param Hypertable.Master.Split.SoftLimitEnabled (true by default).
     Fixed minor compilation issue
     [Issue 640] Fixed  Have "cap cleandb" prompt for confirmation
     issue 685: Changed assert to exception throw
     Fixed issues 678 & 679 (assert in LoadBalancerBasicDistributeLoad and TableMutatorAsync)
     Added latency measurment to Thrift API logging
     Added support for -DPACKAGE_OS_SPECIFIC=1 cmake flag to build OS specific packages
     [issue 661] Fixed ThriftBroker dies on RangeServer exception
     [Issue 641] Create CellStoreBlockIndexArray and make it default. Implemented
     Fixed CellStore-garbage-collection test on mac
     Eliminated warning
     issue 657: Fixed rs_metrics_table initialization problem
     Fixed tcmalloc heap introspection call on 32-bit systems


Version 0.9.5.0:
(2011-07-24)

     Added Asynchronous Mutators
     Added Load Balancer    
     Fixed RSML write race condition on shutdown
     Added FLAG_DELETE_CELL_VERSION to allow a specific version of a cell to be deleted.
     Fixed problem with COUNTER support in MergeScanner causing corrupt keys
     Fixed CellStoreV5 memory tracking
     Fixed ApplicationHandler leak on timeout; RangeServer.Scanner.Ttl default to 1800s
     Fixed Event object leak in Comm layer
     Improved CellStore memory tracking; Fixed merging compaction scheduling; dropped MIXED prioritization
     Added CellStore count monitoring graph for RangeServers
     Added scanner_count graphs to monitoring interface
     Added heap_size, heap_slack, and tracked_memory RangeServer monitoring graphs
     Fixed bug in RangeServer where the server would crash while processing some queries.
     Fixed bug whereby TableMutatorAsync timeout errors were being dropped.
     [Issue 527] Partially implemented. Thrift API partially incomplete
     Added paging statistics graphs to RangeServer monitoring page
     Fixed support for DELETE records in LoadDataSource.cc
     Fix to unacknowledged move cache patch
     [issue 637] Fixed: problem with delete cell with timestamp
     Fixed a couple of minor bugs in metalog_dump tool.
     Added METADATA SYNC command to rsclient
     Added assert(timeout!=0) in Comm layer; Added/Improved some log messages
     Added Hypertable.LoadBalancer.Enable property to allow for disabling balancer
     Added removal of Range entity from RSML at end of relinquish operation
     Added support for move compactions; Added COMPACT command to rsclient
     Added unacknowledged_move cache to Master to avoid repeated move
     Made changes to LoadBalancer to ignore RangeServers that are not live yet.
     Reduced Range split size for Balance-Mechanics tests to avoid running out of file handles.
     Improved bloom filter regression tests
     [issue 285] ThriftBroker requires a restart after hypertable server processes are restarted
     Skip over RS_METRICS entries where version != 2
     Fixed SystemInfo network rx/tx calculation
     issue 639: Changed sort order to be numeric on RangeServer Monitoring page
     Fixed race condition in TableMutatorAsync as well as bug in async_api_test.
     Fixed couple of minor test issues.
     Modified LoadMetricsRange to delete entries for "old" range after a split.
     issue 630: use hostname instead of IP on RS page; Improved graph colors
     Improved merge algorithm by merging long runs of CellStores < TargetSize.Minimum
     Added complete AccessGroup information to RangeServer::dump
     issue 636: Fixed bogus RangeServer shutdown error message
     Eliminated superfluous memory allocations during log replay
     Added --heapprofile to start-rangeserver.sh
     Fixed a couple of uninitialized memory references
     Fixed bug in ScanSpec end_row specification.
     Changed default value of Hyperspace.LogGc.Interval to 10 mins instead of 1 hr
     Fixed couple of possibly buggy comparisons in TableMutatorAsync code.
     Added completed method to ResultCallback so applications can be notified when outstanding async calls are complete.
     Added "heapcheck" command to RangeServer for dumping heap stats
     Fixed race condition in TableMutatorAsync code.
     Added stop_monitoring and start_monitoring cap commands.
     Removed over-aggressive assert in TableMutatorAsyncDispatchHandler destructor.
     Fixed a couple of warnings
     Make Monitoring class map servers by location instead of id
     If RangeServer.ProxyName equals "*" generate Location name using hostname+port
     Added balancing mechanics
     Minor fix to Thrift future calls.
     Replaced TableMutator code with new mutator code based on TableMutatorAsync

Version 0.9.5.0.pre6:
(2011-06-03)

     Fixed bug in MaintenanceScheduler introduced w/ merging compactions
     Fixed bug in the FileBlockCache wrt growing to accomodate
     Added support for DELETE lines in .tsv files
     Added check for DFSBROKER_BAD_FILENAME on skip_not_found
     Added --metadata-tsv option to metalog_dump
     Fixed bug whereby get_table_splits() was returning stale results for previously dropped tables.
     Added MaintenanceScheduler state dump via existence of run/debug-scheduler file
     Fixed FMR in TableMutator timeout

Version 0.9.5.0.pre5:
(2011-05-18)

     Changed Group Commit table hash_map to ordered map and fixed memory leak
     Upgraded Hive jars to CDH3U0 distribution.
     Added support for Hypertable.RangeServer.CellStore.TargetSize.Minimum
     Fixed compaction maintenance staging skip for non-minor compactions
     Fixed split-merge-loop10 and ac-garbage-compaction tests
     Set NO_LOG_SYNC in HqlInterpreter unconditionally for LOAD DATA INFILE
     Cleaned up MapReduce job conf properties and Fixed ROW interval spec
     Auto-increase block cache size to accomodate query load
     issue 618: Fixed NULL pointer dereference in AccessGroup::run_compaction
     Added Hypertable.RangeServer.BlockCache.MaxMemory config property
     Strip base filename from scan files in METADATA Files column
     Upgraded apache_log and freebase examples to use post namespace API.
     Fixed inconsistency in timestamp parsing between LDI and Hql shell insert command.
     Andy's EnsureUnused patch (disabled by default)
     Fixed FindRRDtool.cmake to work on mac

Version 0.9.5.0.pre4:
(2011-05-01)

     [Issue 617] Fixed Superfluous RangeServer::create_scanner() request when scanning over exact range
     Removed benchmark tasks from Capfiles, added Capfile.benchmark
     Added support for ScanSpec in Hadoop streaming mapred
     Added hostname to AsyncComm proxy map
     issue 528: Allow embedded semicolons in HQL string constants
     Added optional support for jemalloc
     Fixed bug in scanner which causes assert when a scanner hits row limit and receives results from a cancelled scanner
     Missed checkin of auto-generated java code
     Fixed CellStore GC regression; Added test
     API Change: Made Table objects auto-refresh schema by default
     Added more info to RS_METRICS (including disk_bytes_read)
     Support for optionally including master location hash into RangeServer proxies
     Added support for IP addresses to be used as Hyperspace.Replication.Host strings.
     Added is_ipv4() method to InetAddr to test if a string is an ip addr in the n.n.n.n format.
     Fixed MergeScanner bug which failed to use MAX_VERSIONS filter correctly when value regex was used.
     Added '\0' escaping/unescaping to SELECT, DUMP TABLE, LOAD DATA INFILE
     Removed trailing slash on exclude hyperspace in Capfile rsync commands
     Added Hyperspace.Client.Datagram.SendPort property (default=0)
     Fixed bug in scanner timeout logic. Timers were not being reset correctly in between calls.
     Removing dependency on BerkeleyDb libraries in Hyperspace client library.
     Fixed Capfile install/upgrade tasks to work with standalone installs
     Fix for rounding error in LOAD DATA INFILE timestamp parsing
     Fix for KEYS_ONLY scan
     Fixed bug in MergeScanner logic.

Version 0.9.5.0.pre3:
(2011-04-12)

     Modified stop-servers.sh to stop master and rangeserver iff client progs exist
     Upgraded to CDH3u0
     Fix for recent ensure unused physical memory patch

Version 0.9.5.0.pre2:
(2011-04-11)

     Ensure amount of unused physical memory for RangeServer
     Fixed scanner deadlock when RangeServer dies or throws exception in create_scanner request.
     Fixed ThriftBroker timeout problem; Removed default value for ThriftBroker.Timeout
     Added --nomd5 option to rpm command
     Got rid of role for install tasks in Capfiles
     Fixed bug which causes assert when error message length > int16_t limit.
     More Capfile changes.
     Changes to Capfile. Replaced "dist" task with "install" and modified "upgrade".
     Lazily create RangeLocator in RangeServer
     Fix for recent changes to ApplicationQueue
     Fixed bugs in TimeInline parse_ts function; Added regression test
     Fixed problem with recent changes to ApplicationQueue
     Put shell into "batch mode" when commands supplied with --execute
     Set default RangeServer work thread count back down to 50
     Modified ApplicationQueue to create thread on urgent task if all busy
     Added server-side timeout during initialization; Increased worker threads
     Fixed RSML upgrade logic
     Fixed problem with SystemInfo::DiskUsage computation
     Issue 598:  Common-properties and Common-init tests failing on some platforms. Fixed.
     Fixed shutdown problem with TableMutatorIntervalHandler
     Fixed Range load_acknowledged problem when upgrading from pre-0.9.5
     Fixed release string verification regex; Added print functions for MaintenanceData
     Fixed hang problem with serverup dfsbroker
     Fixed some bugs with recent monitoring changes
     Fixed RangeServer freeze during initialization with low memory condition
     Fixed typos in VersionHelper.cmake
     Fixed MasterClient-TransparentFailover test
     Fixed some issues with monitoring graphs
     Fixed bug in Future class.
     Use existing app queue for metadata/metrics table
     Added "Range Count" to range server monitoring table
     Fixed low memory freeze problem
     Stopped Master GC from adding unnecessary deletes into METADATA table
     Made RangeServer print error and exit on listen error
     Fixed bug in ScanCells interface whereby it was possibly to dereference a null pointer.
     Fixed monitoring bug, changed installation dir from "0.9.4.3" to "current"
     Fixed problem resulting from lost load acknowledge response
     Fixed bug in future_abrupt_end_test.
     Fixed Master DispatchHandler outstanding tracking
     Fixed deadlock in scanners.
     Fixed bug in scanner logic.
     issue 585: Copy new METADATA.xml and RS_METRICS.xml in fhsize.sh
     if on startup MML is empty and /sys/METADATA exists, don't try to create it
     Fixed shutdown order sequence
     Fixed RangeServerConnection state persistence problem
     Updated CHANGES file for 0.9.5.0.pre release
     Fixed scanner bug where once a scan was cancelled scanners were being set current out of order.

Version 0.9.5.0.pre:
(2011-03-24)

     Master overhaul
     MetaLog overhaul
     Asynchronous Scanner API
     Upgraded to Thrift 0.6.0
     Upgraded to CDH3B4
     Added sys/RS_METRICS
     Fixed bug in monitoring system that was calculating buggy Cell and Byte read/write rates.
     Added METADATA-split master failover tests
     Added MasterClient-TransparentFailover test; fix bugs that turned up
     Added VERSION_MISC_SUFFIX to version string for 0.9.5.0.pre release.
     Added delete_count to CellStoreV5Trailer which stores the number of delete records in the CS.
     Added list of replaced files to CellStoreV5.
     Fixed soft_limit regression
     Fixed intermittent test failues due to exit(); Got rid of valgrind warnings
     Added two-phase master requests
     Fixed warnings
     Upgraded version number to 0.9.5.0
     Cleaned up prune threshold limits; Got rid of warnings
     Fixed deadlock in ResponseManager
     Fixed data loss bug - made CommitLog close synchronous; fixed async scanner bug
     [Issue 579]  metalog backup verification causing intermittent test failures. Fixed
     Added regression tests for stopping synchronous and asynchronous scanners abruptly before scan completes.
     Fixed deadlock in TableScannerAsync code.
     Added needs_compaction flag to RangeServer::load_range method.
     [Issue 578]  Deadlock in async scanner. Fixed
     Added ht_master_client shell program with shutdown command
     Fixed hyperspace-reconnect test
     Fixed monitoring server initialization problem
     Minor fix to dot jpg file generation.
     added start_time,end_time as http query params
     Close cell store file before removing directory
     Create <data dir>/run folder if required
     Fixed a bunch of minor issues.
     [Issue 577]  RangeServer::commit_log_sync should respect group commit. Fixed
     Added regression tests and bug fixes for Future API.
     Performance and functional bug fixes to TableScanner class.
     Implemented changes to C++ and Thrift clients to support asynchronous scanners. -TODO: add tests for Php and Python 
     Fixed a bug that was causing the METADATA-split-recovery test to fail intermittently.
     issue 552: Ensure Hyperspace handles get closed; Naming cleanup
     Fixed incorrect CellStoreTrailerV5 version check caught by assert
     Added CellStoreV5; Monitoring system improvements (avg. key & value size)
     added new column to table stats
     Added file_count to StatsTable; Fixed compression ratio computation
     Got rid of read_ids flag in Schema parse API
     "changes to header labels"
     Monitoring UI Changes, Sorting options for stats summary
     Updated clean-database.sh script to reflect new rsml backup location
     added invalidate methods for table name changes
     bunch of changes to Monitoring UI changes (reading from json and got rid google graphs which gives summary) Added Ta
     Fixes to monitoring & stats gathering
     Fixed bugs caught by Andy Thalmann (ScanContext copy ctor bug)
     added table names to json , removing unnecessary code
     Fixed minor monitoring/stats gathering bugs
     issue 563: fixed METADATA split test
     bunch of changes to Monitoring UI changes (reading from json and got rid google graphs which gives summary) Added Ta
     Added Hypertable.RangeServer.CellStore.SkipNotFound
     issue 559: Prevent transfer log from getting linked in twice
     issue 552: Ensure Hyperspace handles get closed; Naming cleanup
     [Issue 505] Client-no-log-sync regression failure
     issue 537: Fixed RangeServer shutdown hang
     issue 542: Only write last-dfs file if it doesn't exist
     issue 544: Set default RangeServer memory limit to 50%
     issue 553: Schema HQL render wrap table name in quotes if necessary
     issue 545: Reduced random-write-read test to 1/5 the size
     [Issue 551] Upgraded to QuickLZ 1.5
     Fixed bugs related to MasterGc and live file tracking
     Renamed MoveStart and MoveDone RSML operations to RelinquishStart and RelinquishDone.
     Made changes to BalanceStarted/Done and RangeMoveLoaded/Acknowledged MML entries.
     Added code for additional MML entries.
     Changed MasterMetaLog to garbage collect entries during recovery.
     Added MoveStart and MoveDone RSML entries.
     Changed RangeServerMetaLog to garbage collect entries during recovery.
     Fixed rare bug that caused root range corruption
     issue 547: Found and fixed more race conditions
     Fixed excessive maintenance scheduling during low memory condition
     Fixed deadlocks uncovered recently
     Fixed race cond in drop_table; Fixed RangeServer::update bug
     Changed DfsBroker.Local.DirectIO default to false
     Fixed some stats gathering issues discovered in sys/RS_METRICS
     issue 531: Fixed bug in load_generator that caused intermittent drop of last cells
     Added RangeServer::relinquish_range() (with RSML update code stubbed out)
     Added Hyperspace::Session::open() method with no callback; code cleanup
     Use "scanned" cells/bytes for load metrics; Added paging info to load metrics
     Fixed recently introduced "bad ProxyName" problem
     Do not reduce the limit below the minimum
     Scan and filter rows fix and optimization
     Config property "Hypertable.RangeServer.LowMemoryLimit.Percentage" has been added
     Added disk_used, disk_estimate, and compression_ratio to StatsTable
     Fixed revision number problem in CommitLogReader with link entries
     Renamed Master::report_split() to Master::move_range()
     Added MML
     Fixed monitoring stats; fixed JSON output for RS summary
     Monitoring overhaul part 1
     new rangeserver stats
     changes to use new rangeserver summary data
     Destroy comm has been fixed
     HQL scan and filter rows option added
     Logic changed to setup row intervals in case of scan and filter rows
     Optimization for scan and filter rows
     Scan and filter rows has been implemented (Issue 525)
     check for negative resolution
     issues with config
     Added resolution param to rrd page
     Fixed monitoring stats; fixed JSON output for RS summary
     Monitoring overhaul part 1
     Check for zero-lengthed row and skip in LoadDataSource
     Allow NULL strings to be passed into FlyweightString
     Fixed bad memory reference in RangeServer::FillScanBlock
     cleanup has been added
     Added prepend_md5 tool
     Redirect thrift output to HT logger
     Assignment operator added
     Support empty qualifier filtering
     Recursive option added to the hyperspace readdirattr command
     Recursivly option added to the hyperspace readdirattr command
     Include sub entries for get_listing/NamespaceListing, readdir_attr/DirEntryAttr
     Fixed syntax error recently intoduced into Ceph broker code
     Added StrictHostKeyChecking=no to rsync
     Added regexp filtering to DUMP TABLE command.
     Added optimization for row and qualifier regex matching.
     Added script to compare test runs times and detect potential performance regressions.
     Cleaned up SELECT [CELLS] Hql command.
     Removed DfsBroker.Host from default hypertable.cfg; Cleaned up DFS Port properties
     Fixed bug in Hyperspace caused by Reactor thread directly calling BerkeleyDbFilesystem on disconnect.
     Improved Master handling of already assigned location in register_server
     Fixed performance regression in ScanContext by using set instead of hash_set for exact qualifiers


Version 0.9.4.3:
(2010-11-15)

     issue 534: Made RangeLocator thread-safe
     MetaKeyBuilder crash with nested namespces fixed
     Got rid of spurious "Connection refused" error messages
     Decreased default bucket count to 20 for DUMP TABLE
     Added group commit
     Added regex filtering on ROW, COLUMN FAMILY, and VALUE
     Modified Capfiles to start ThriftBroker on master
     Added code to catch BAD HEADER LENGTH exception in IOHandlerDatagram
     Fixed unprotected access to Range stats data
     Changed regexp members of ScanSpec to use memory arena
     Added more documentation about how to LOAD DATA INFILE from stdin
     Added support for filtering by qualified column and remove restriction of HT rowkey==first col in Hi
     Added the ability to set multiple column qualifier filters for a given column family.
     Added retry logic to LiveFileTracker::update_file_column. -Added regression test, commented out for 
     issue 247: Added methods to RangeServerClient that accept Timer
     Fixed bug in AsyncComm poll() mode
     Evaluate --hyperspace host:port argument
     Fixed problems in MetalogRangeServer and FileBlockCache tests (Andy Thalmann)
     Fixed bug in SerializedCellsReader; Added more test scripts
     Toplevel directory added
     Added parallel INCR test to PerformanceTest; Increased ThriftBroker timeouts
     Added instrumentation to group-commit tests; Fixed TestHarness
     Lazy fix for issue 530
     Crash fixed (happens for MutatorNoLogSyncTest)
     Close open file handles before delete file
     Hypertable.DataDirectory (Hypertable data directory root) configuration parameter added to the Defau
     Added RE2 dependency to PackageHelper
     Added API support for row, value and column qualifier regexps. -Added API support for row, value and
     Added dependency & cmake check for RE2 regex library.
     Fixed error in CREATE NAMESPACE documentation


Version 0.9.4.2:
(2010-10-26)

     Upgraded to Thrift 0.5.0
     Added COUNTER type column family.
     Fixed potential deadlock in periodic mutator code path.
     Added missing rrd dependencies to packages
     Pulled in Trent's fix for null values in TextTableInputFormat and InputFormat.
     Support for cell flags (FLAG_INSERT, FLAG_DELETE_*) in thrift serialized cells
     Make use of existing Common/endian-c.h
     Read and set timeout for thriftbroker
     Added optimization to increment CellCache counter in place
     Updated PerformanceTest added support for increment
     Fixed problem with IF EXISTS option to DROP NAMESPACE
     Added clean task as dependency to jar task.
     issue 518: Trim whitespace to avoid HqlParser error
     issue 517: compilation problem with VERSION constant in CommHeader
     issue 515: prevent PHP error reporting from being enabled unconditionally
     Fixed ThriftBroker crash when opening bad namespace
     Added resolution param to rrd page


Version 0.9.4.1:
(2010-09-23)

     issue 516: fixed Table::get_name()
     Monitoring README fix.
     shell script changes
     Removed config.yml.in Changes to start script.
     changes to config.yml
     using thin server now, fixed config.yml data dir issue, added progress bar on graphs page
     Modified Monitoring UI start/stop scripts.
     Fixed bugs in Hive extension introduced by thrift 0.4.0 byte[] -> ByteBuffer change.


Version 0.9.4.0:
(2010-09-08)

     Added Namespaces
     Added AG garbage collection logic for MAX_VERSIONS, deletes, and TTL
     Hypertable Monitoring web interface using sinatra
     Made changes to garbage collect unused Hyperspace BerkeleyDB logs.
     Upgraded to Thrift 0.4.0
     issue 501: Made Capistrano "upgrade" task first verify that upgrade is OK
     issue 440: Renamed CellFlag to KeyFlag; Renamed put_ methods to offer_
     issue 504: Store relative filenames in METADATA
     Added RENAME TABLE feature.
     issue 479: Added support for configurable toplevel directory name
     issue 174: Changed all state file/dir names to include table id instead of name
     Modified capfile to start and stop monitoring server on master.
     Updated location of monitoring UI code.
     Modified start and stop scripts for Monitoring UI
     Made changes to print out ProxyMap to text file to be used for the Monitoring UI.
     Fixed string encoding/decoding problem in Java code
     Fixed stats gathering logic to handle variable length string table ID
     issue 316: Moved CREATE TABLE options to the end after column defs
     issue 487: Fixed Comm layer core dump with many client connections
     issue 496: Fixed bad logic in EINTR handling
     Changed namespace "SYS" to "sys"
     issue 497: fixed problem of column qualifier not getting cleared in Thrift API
     issue 11: Use shorter cellstore filenames. Fixed
     Added hypertable shell regression test for namespaces. Updated some documentation.
     Namespace Client API changes.
     issue 174: Changed all state file/dir names to include table id instead of name
     issue 234: Propagate better error messages from DfsBroker to RangeServer log
     issue 106: Use JAVA_HOME to find java binary, if set
     Got rid of verbose logging from recent AG garbage collection change - Also changed Hypertable.RangeServer.AccessGrou
     issue 479: Added dual-instance regression test
     Changed semantics of readdirattr and readpathattr Hyperspace commands
     Added NameIdMapper class.
     Made changes to store next table id in Hyperspace..
     Added Hyperspace readpathattr API to list the value of an attribute for all components in a path
     Added Hyperspace attr_incr API to atomically increment an attribute.
     [Issue 148] hql parser doesn't like quotes inside a string even when escaped. Fixed.
     [Issue 481] ThriftClient-reconnect-hyperspace failure. Fixed.
     [Issue 491] core dump at get_ts64() of Time.cc. Fixed
     [Issue 488]  Hyperspace crash. Fixed
     [Issue 492] RangeServer crash. Fixed
     Fixed bug in Master stats collection.
     Made changes to checkpoint BDB every time there is 1M worth on uncheckpointed log data.
     Minor fix in FindRRDtool.cmake
     Don't link Hyperspace.Master to tcmalloc for 32-bit

Version 0.9.3.4:
(2010-07-15)

     Switched to CDH3; Made Ant and Thrift required
     Updated some auto-generated files for new version of thrift
     Updated HqlHelpText with CELL_LIMIT feature info.
     Don't link ThriftBroker with tcmalloc on 32-bit
     Added support for newer versions of Boost
     Minor fixes to monitoring code.
     Added cell_limit feature to scan/select queries.
     Fixed link problem with serverup on Mac OSX
     Added dependent RRD libs to install

Version 0.9.3.3:
(2010-06-23)

     Fixed bug in fhsize.sh; Added fhsize task to Capfiles - Load libthrift jar file to CLASSPATH first
     Minor fixes to namespace violations and use Table name in place of ID for monitoring.
     Fixes to mapred Input/Output formats
     Added upgrade task to Capfiles
     Made changes to monitoring system to print Table name as well as ID.
     Hypertable-Hive connector.
     More tuning based on perfeval test1 results
     Changed ThriftBroker threading model to threaded instead of thread pool


Version 0.9.3.2:
(2010-06-12)

     Changed some defaults based on perf tests
     Added range readahead in IntervalScanner - Report info about actual data read in Performance test driver
     Upgraded to thrift-0.3.0-rc4 from http://people.apache.org/~bryanduxbury/thrift-0.3.0-rc4.tar.gz
     Initial version of Monitoring application
     Fixed Sigar library name for OSX.
     Modified Thrift get_schema API to return Schema object and added get_schema_str API
     Fixed TableSplit.java to lookup hostname for location since Hadoop doesn't understand IP addr
     issue 356: Record DFS is run/last-dfs file and report error if mismatch
     Fixed race condition in Master::get_statistics()
     Fixed timeout problems with ThriftClient
     Fixed compile problem in ThriftBroker;  Added run-benchmark.sh script
     increased transfer buffer
     Added support for Zipf, report output file, etc.
     Added rrd library to install; Fixed race condition in Client table caching
     Increased interval scanner readhead buffer size 5x512K
     Fixed bugs in ThriftBroker next_cells_serialized and next_row_serialized APIs
     Added next_row_serialized API to ThriftBroker.
     Added system wide stats like #cores, disk , mem utilization, load avg to monitoring stats.
     Added code to blow away monitoring dir when clean-database.sh is run.
     Added PerformanceTest benchmark framework - Switch ThriftBroker to TThreadPoolServer on linux - Added _serialized me
     Added support for DIRECT I/O
     [Issue 464] Add refresh_mutator API. Added refresh_shared_mutator API to Thrift interface
     [Issue 86] Monitoring.
     Added Master maintenance timer
     Fixed circular dependency in build.
     issue 414: added thriftbroker and spare Capistrano roles - Also included DfsBroker in the hypertable-thriftbroker pa
     added the ability to specify start/end row with streaming fixed the handling of splits with regards to maps
     Added Hypertable.RangeServer.Scanner.BufferSize
     Set key_compression_scheme propery in CellStoreV3 trailer
     issue 427: Added expiration_time and expirable_data to CellStoreTrailerV3
     issue 149: Added prefix key compression to CellStore (v3)
     [Issue 259] LDI should be able to load data from DFS. Updated documentation.


Version 0.9.3.1:
(2010-04-14)

     added support for map reduce streaming
     Fixed prune_tsv to work with DUMP TABLE format, added regression test
     issue 449: Remove fhsize from RPM and DEB post-install
     [Issue 448] Hypertable shell trying to connect to DFSBroker. Fixed.
     issue 439: Strip duplicate cells during scan
     issue 443: Check for invalid ':' character in column family names
     issue 442: Escape/unescape row key and column qualifier
     Added Dfs support to DUMP TABLE command.
     [Issue 416] Commands taking long time to run. Fixed
     [Issue 420] Incorrect checking of errno after calling FileUtils:: function. Fixed
     issue 436: Fixed problem causing full table scan for each split
     issue 408: Fixed problem where scanner didn't propagate revision number
     issue 430: Fixed STL comparator semantics
     issue 385: Made REPLICATION factor configurable per-table and access group
     [Issue 175] HQL parser getting confused on INSERT of 4-digit row key. Fixed.
     issue 124: Documented LDI options IGNORE_UNKNOWN_COLUMNS and DUPLICATE_KEY_COLUMNS
     issue 260: Display useful error message when LDI HEADER_FILE not found
     issue 419: Fixed race condition in Comm::connect HandlerMap access
     issue 421: Fixed Free Memory Read bug in ProxyMap
     [Issue 395] Client-no-log-sync test fails intermittently. Fixed
     [Issue 381] HqlInterpreter::execute(...) pass reference to output parameter.
     issue 378: Added escaping of '\' in addition to \n and \t
     issue 423: Fixed MetaLogDfsBase::get_filename()
     issue 424: Added destructor to MetaLogReaderDfsBase to close file handle
     issue 402: Lazily load CellStore block index for faster startup time
     Fixed warnings on Linux x86_64 gcc 4.1.2
     [Issue 259] Checked in changes to allow LDI and SELECT to read/write from/to  DFS.
     issue 136: Fixed bug in DfsBroker ClientBufferReaderHandler
     issue 403: fixed Coverity bugs
     issue 417: Allow quoted table names in INSERT command - Added regression test (verifies issue 34 as well)
     issue 34: Fixed bug in ScanContext causing minimum timestamp to be 1970-01-01
     issue 422: Fixed bad memory reference after copying Managed objects
     Fixed minor (innocuous) problems in Comm layer
     issue 411: fixed priority_queue less comparator
     issue 410: fixed reverse proxy map invalidation
     Fixed double file handle close in HQL interpreter
     issue 406: Check iterator against appropriate map structure
     issue 404: close file handle in FileUtils::file_to_buffer
     Fixed FindThrift.cmake to look in /usr/lib64
     Added libstacktrace to package
     Fixed Capfile rsync_installation to work with FHSized install


Version 0.9.3.0:
(2010-03-22)

     Added Hyperspace replication
     Added MapReduce connector
     Added Query Cache
     FreeBSD port
     Solaris port
     Added DUMP TABLE
     Added LOAD DATA FORMAT input file format auto-detect
     Fixed memory leak
     Added shadow CellCache
     Added poll() support to Comm layer for Linux 2.4 kernels
     Exclude CellStores that are outside of scan spec timestamp range
     Improved efficiency of KeyWritable; added comments
     Fixed race condition with proxy map propagation
     Updated htbuild
     Added missing ssl library to CephBroker build
     Added --thrift flag to ht_load_generator tool to test loads via ThriftBroker.
     Changed PerformanceEvaluation tool to generate random buffer once and re-use it to lower CPU load
     Increased ThriftClient timeout to 10min for MR PerformanceEvaluation task
     Changed Hyperspace lock operation result log from debug to info.
     Fixed recursive includes in hypertable jar files that were bloating the file size
     Modified path for Java Client examples and build.xml paths for examples jar file
     Added Hypertable PerformanceEvaluation class.
     Fixed duplicate server location assignment problem
     Added Key class to Thrift, make Cell a composition of Key and value
     Plumbed the Client::get_table_splits API through the ThriftBroker
     Checked in OutputFormat for Hypertable MapReduce connector.
     Added 'exists_table' API to Hypertable client, Thrift interface and HQL.
     Added INSTALL_EXCLUDE_DEPENDENT_LIBS cmake variable
     More FreeBSD porting work
     Turned off ShadowCache by default
     Made poll error handling more graceful (return error instead of exit)
     Added Hypertable.RangeServer.AccessGroup.ShadowCache property to enable/disable shadow cache
     Workaround for xen timestamp problem; Fixed Master deadlocks
     Fixed memory leak in maintenance queue
     Fixed deadlock in Master
     Added VERSION_ADD_COMMIT_SUFFIX cmake variable
     Added address proxy
     Got rid of boost spirit warnings
     Fix to allow 0 column family for retured cells that are DELETE_ROW
     Auto-adjust blockcache size based on workload - Maintenance scheduler re-work
     Fixed progress meter for large load files and generated data sets
     Fixed --max-keys handling for ht_load_generator - Also respect min_pool and max_pool for Uniform random number generator
     Got bloom filter working again - Added new CellStoreV2 format with all necessary bloom filter state in trailer - Added --num-hashes and --bits-per-item bloom filter options
     Cleaned up FailureInducer interface
     Fixed METADATA split recovery race conditions
     Cleaned up regression tests; Updated documentation
     Made Master::server_left() close connection to avoid race condition
     [Issue 388] Fixed issue by checking for session existence within BDB txns.
     Setting replication site priority according to order in which replicas are listed in config file
     Fixed bug in Hyperspace logic which was causing Hyperspace to delete a handle for an expired session.
     Made changes to avoid duplicate masters among BDB replication sites.
     Modified Hyperspace replication logic to wait for permanent message acks from all replicas.
     Modified Capfiles with new hyperspace replication stuff
     [Issue 372] Minor cleanup, changed error message to info. -This is an expected case and not really an error
     Upgrading BerkeleyDB requirement to >= 4.8.x
     Replaced HT_EXPECTs in BerkeleyDbFilesystem code with HT_ASSERTs
     [Issue 372] Added scope guards to prevent BerkeleyDB cursor leaks. -Also changed a few asserts to HT_ASSERT
     Made changes to allow Hyperspace clients to connect to any Hyperspace replica and get redirected to master.
     Made changes to BerkeleyDbFilesystem so that each txn opens its own DB handle to avoid DB_REP_HANDLE_DEAD errors.
     Changes to implement basic replication
     Fixed problem preventing CellStore indexes from getting GC'd
     Leave AccessGroup in consistent state after compaction failure
     Fixed Memory Corruption in MetaLogDfsBase
     Fixed infinite loop on ROW_OVERFLOW
     Fixed deadlock
     Apply MAX_VERSIONS unconditionally
     Added RSML backups in $INSTALL/run/rsml_backup/
     Fixed problem with "LOAD DATA INFILE" from STDIN where incorrect progress bar update was the load down.
     Updated version number to 0.9.2.8
     Fix for Hyperspace race condition; Added compaction asserts
     Fixed delayed connect problem
     Updated system tests; Increased BlockCache default size to 150M
     Default dfsclient timeout to Hypertable.Request.Timeout
     Fixed memory leak; Added support for tcmalloc HEAPCHECK
     Added shadow CellCache; Re-wrote maintenance scheduler
     Allow .tsv files with empty values
     Issue 358: be a little smarter about default config file path.
     Fixed problem with soname.sh and libsigar
     Workaround for clock()/poll() incompatibility
     Added support for cmake variable HT_DEPENDENCY_DIR
     Modified BerkeleyDb search path to look for 4.8 release if available
     Changing BDB_DEADLOCK messages to info instead of warning.
     Added keys_only to Thrift ScanSpec interface
     Issue 361: Allow RangeServer to reconnect with Master after connection reset
     Upgraded to Thrift 0.2.0
     Added put_cell* API to Thrift interface to give easy access to shared periodic flushing mutators
     Removing BDB deadlock error messages. Use warnings instead.
     Fixed compile error on mac
     Updated htbuild for thrift r830673, kfs 0.4 and ceph 0.17 - Also added fix for python thrift installation on ubuntu
     Made Cells and ScanSpec fully take advantage of custom allocator - Made clear() semantics for the containers consistent as well.
     Consolidate pool allocators and their usage.
     Updated doxygen doc version
     Cleaned up some compiler warnings under gcc 4.3.
     Fixed an fmr for valgrind
     Added some test helper functions/classes/templates.
     Made property accessors const where appropriate - also tweaked the default config file to use relative path if possible.
     Temporarily added back thrift perl dependencies to the rpm package - probably better off zip the perl examples in the distribution.
     Added thrift version ht -v
     Added help/usage info for the ht wrapper
     Added basic regression test init_* function. - Caught int32_t masking issues on Solaris
     htbuild: update for fedora 11
     Fixed unknown option error from serverup for non-default options.
     Fixed hql result logging in ThriftBroker
     Upgraded thrift to r830673 to fix stack smashing in ThriftBroker - added slf4j jars for the new thrift - added java-thrift.sh for easy launching jhava thrift clients
     Added support for Hypertable.Network.Interface config property
     Added tsv-format and column-id-map options to csdump
     Added Query Cache - Added .values property to load generator spec file to indicate number of distinct values to generate
     Fixed RangeServer::load_range RSML write error handling to leave system consistent
     [Issue 355] Fixed and added regression for LDI timestamp issue.
     Fixed load_generator to support MaxKeys for load type 'update'
     Added CellCacheScanner entry cache - Also fixed some build issues on Snow Leopard
     Fixed problem where load_generator not respecting MaxBytes for query
     Fixed TableMutator::set_cells to throw BAD_KEY exception for cf/cell deletes without a column family.
     Replaced sleep with perl select() command in random-wait.sh
     Fixed bug in ConnectionManager::remove - Fixed broken regressions
     Fixed trailing '\n' problem in prune_tsv
     Fixed CLOSED_WAIT problem with serverup and HdfsBroker
     [Issue 340] Added Thrift MutatorFlag IGNORE_UNKNOWN_CFS.
     Added "--exec/-e" and "--command-file" switches to CommandShell to execute commands.
     Fixed memory corruption issue triggered when the interval mutator fails on successive writes.
     Added --newer switch to prune_tsv
     Fixed bug in Schema rename method
     Fixed SIGAR library detection on mac Snow Leopard
     Fixed connection/retry problems surfaced on Solaris
     Fixed int32_t overloading issue on Solaris i386.
     Change all tests/integration scripts to explicitly use bash
     Worked around RAND_MAX quirk on Solaris
     Worked around quirks in cmake on Solaris
     Added table name to error message and modified Table & TableIdentifier classes to expose name.
     [Issue 340] Added "ALTER TABLE RENAME COLUMN FAMILY" feature to rename column family names.
     [Issue 340] Added ignore unknown cfs feature to LDI.
     Changed Hypertable client Hyperspace connection check interval to 5s instead of 3s.
     Fixed CellStoreScanner to turn off readahead mode in case of single row scans.
     Commited changes to allow a client to automatically refresh stale schema during certain ops.
     [Issue 339] Added instrumentation to debug this issue and fixed empty bloom filter problem.
     Got rid of Hypertable.Request.Timeout from default hypertable.cfg
     Got Master::close() plumbed through properly - Got rid of some warnings in Hyperspace - Made performance improvements to prune_tsv
     Commited changes to allow a client to automatically refresh stale schema during certain ops.
     Added flag to allow Sessions to reconnect to Hyperspace instead of expiring.
     Major Hyperspace overhaul to store Session, Handle, Node and Event data mostly in BerkeleyDb.
     Added prune_tsv tool
     Fixed sequential-load test script
     htbuild: exit ASAP in case of errors
     Fixed tcmalloc version check (should run every time)
     Fixed FindCeph.cmake for the new location of libceph.h in 0.14
     Updated boost to 1.40 in package build - added ntpdate to htbuild to avoid make timestamp issues - fixed tcmalloc build problems introduced by last refactor

Version 0.9.2.7:
(2009-09-18)

     [issue 333] Fixed data loss problem after recovery
     [issue 332] Fixed problem in IntervalScanner due to delayed connection establishment
     [issue 331] Fixed post-recovery split problem
     [issue 323] Fixed problem that caused unnecessary work leading to thread exhaustion
     Upgraded to Hadoop 0.20.1
     Added support to run regressions on different DFSs
     Updated tcmalloc to 1.4 for package build
     Added CephBroker for Ceph DFS (http://ceph.newdream.net/)
     Added RS_LOG_RECOVER entry to RSML after recovery to indicate log validity
     Added htpkg utility script for building binary packages
     Modified RSML to create new file on load; keep only last 10
     Allow rpm build on Ubuntu/Debian machines
     Added bin/src-utils/htbuild for building packages
     Augmented htbuild to allow easy setup of dev environment
     [issue 333] Fixed data loss problem after recovery
     Added instrumentation to help track down bad BloomFilter creations.
     Added test for out-of-order revisions; Added rangeserver_dump to Capfiles
     Added RangeServer::dump() method to dump stats to file
     Added DUMP command to rsclient
     Modified shutdown command to first close before shutting down
     Fixed stop-servers.sh; Added close command to shell
     Fixed NPE in count_stored program
     More fix to packaging on Mac OS X.
     Issue 328: Fixed broken implementation of next_row in Thrift interface.
     Changed Hypertable.RangeServer.MemoryLimit.Percentage default to 60
     Improved SELECT documentation
     Added packaging and version info related to CephBroker.
     Fixed problem introduced in ht-env.sh due to bash discrepancies
     Cleaned up doc generating targets
     Made prerm always succeed to avoid broken package states
     Some font tweaks so that the pages look decent in alternative platforms
     Fixed memory corruption problem in ht_load_generator
     Removed obsolete demo directory and cleaned up some space errors
     Only print javac version if there is one in ht -v
     Made system libs id more portable with ldd.sh
     Worked around a compiler bug in gcc 4.2
     Made kfs version optional in ht -v
     Use i386 as 32-bit x86 suffix instead of i686 from uname
     Updated README for thrift and packaging
     Build thrift broker package first to preserve regular build tree states
     Add a build type suffix to the package if it's not a release build
     Print more component version info in ht -v
     Added quick version info in bin/ht
     Added option for kfs broker to print kfs version
     Install scripting language bindings for thrift even if thrift is not installed
     Added libthrift.jar to lib (in the source tree)
     Added a few convenient commands for ht for shared lib diagnosis
     Added script to figure out soname on supported platforms
     Made cmake generate binary package index html
     Moved libthrift.jar from lib to lib/java for consistency
     Renamed LICENSE to LICENSE.txt to appease the PackageMaker
     Added convenient method to check ldd under ht
     Added some missing components for thrift broker package
     Made starting server with logging options more robust
     Avoid globbing hidden files (.svn etc.) in conf directory.
     Made the FHSize script idempotent
     Warn about prelinked shared libraries
     Fixed conf packaging for thrift broker only build
     Added HypertThriftConfig back into list of targets for ThriftBroker install.


Version 0.9.2.6:
(2009-08-15)

     [issue 319] Fixed problem that prevented cell stores from getting written to METADATA Files column
     [issue 315] Fixed scanner creation problem on restricted range CellStores
     Fixed bug introduced by recent CellStoreScanner changes
     Refactored startup scripts for robustness
     Added support to create binary packages with minimal dependencies
     Added markdown HQL documentation
     Update HQL help text
     Changed stop-servers.sh to invoke 'shutdown' via rsclient
     Also added --no-hyperspace option to rsclient
     Re-named rsclient to ht_rsclient
     Changed Hypertable.Request.Timeout from 5 to 10 minutes
     Output row and column instead of rowkey and columnkey for LDI header
     Translate IP address to 127.0.0.1 when host resolves to 0.0.0.0
     Made sequential-load/run.sh easier to run from command line.
     Check returns of some system() calls to silence some compiler warnings.
     Use objdump to get the correct SONAME for packaging
     Included Capfile.* and removed 3+MB obsolete demo files from packaging
     Added post install scripts to FHSize the directory layout
     Fixed Schema::render_hql_create_table() to not included deleted columns and empty AGs
     Cleaned up some noop code recently introduced in CellStoreScanner
     Added TTL and MAX_VERSIONS to CREATE TABLE options
     DESCRIBE TABLE no longer displays IDs by default; Added WITH IDS option
     Updated README for binary packaging
     Refactored init* functions from Config.h into Init.h
     FindSIGAR: search for x86_64 as well as amd64
     Prefer tcmalloc_minimal over tcmalloc
     Added IN_MEMORY and BLOCKSIZE=<n> to CREATE TABLE options
     Fixed bug in HT_DECODE_BYTES32


Version 0.9.2.5:
(2009-07-29)

     Fixed memory leak in query path
     Implemented purgeable CellStore indexes and bloom filters
     Added mutator options to periodically flush buffers
     Fixed bug in CommitLog that was causing some fragments to get dropped incorrectly.
     Fixed bug in CommitLogReader caused by fragment queue iterator invalidation when log fragments are pushed to the back of the deque.
     Rewrote Cell Cache/Store Scanner
     Added MaintenancePrioritizerLowMemory used in low memory condition
     Implemented mutator no flag sync feature and added regression test.
     Fixed performance regression in IntervalScanner
     [Issue 313] Added temporary fix and instrumentation for debugging.
     Updated ruby tests for mutator API changes (The rescue block was masking exceptions)
     Fixed load-exception test
     Setting default commit log revision to TIMESTAMP_MIN instead of 0.
     Fixed commit-log-gc test
     Renamed ClientException::what to message for compatibility with most languages
     Added hql_*2 APIs for returning cells as arrays in HQL queries (To support find_by_sql in HyperRecord)
     Allow 'row' and 'column' for LDI hyperformat header
     Regenerated files with updated thrift
     Added --query-delay=<millis> option to load_generator
     Got rid of some java warnings
     Fixed KosmosBroker::pread to not modify current offset
     Thrift related changes for periodic mutator flush
     Rename a test label to follow the convention of the rest of the tests
     Restart test servers automatically every time when make *tests
     Added script to dump backtraces of running/hanging servers.
     Allow VALGRIND to be defined as environment variable in start scripts.
     Added missing php files for the no_log_sync flag.
     Fixing occasional segfaults upon exit in some tests
     Fixed occasional garbled version string.
     Added system integration test which loads 5G of data, restarts the cluster and does a scan to verify the load.
     Fixed infinite in-memory AccessGroup compaction loop
     Lazy load bloom filters
     Added rsclient 10x split/merge loop test
     Applied changes to build with GCC 4.4.0
     Fixed mutator log sync regression test and cleaning up dumplog.
     Added Hypertable.HqlInterpreter.Mutator.NoLogSync property
     Added command line switch --no-log-sync to hypertable cli for setting the aforementioned property
     Fixed a couple of rare NullPointerExceptions in HdfsBroker
     Added flags argument to ThriftClient open_mutator
     Modified load generator tool to support no log sync and flush interval flags.
     Fixed bug in commit log garbage collection that was caused some cells to be dropped.
     Print out bad line number on LOAD DATA INFILE exception
     Fixed ThriftClient-perl regression test
     Send KEYS_ONLY clause over to RangeServer for processing server-side
     Fixed test for Python Thrift module
     Changed RangeServer.MemoryLimit.Percentage default from 80 to 70
     Added size of block cache to memory tracker
     Got rid of hardcoded 60 second DfsBroker.Timeout


Version 0.9.2.4:
(2009-05-25)

  * Upgraded to Hadoop 0.20
  * Added metadata-split test; Found and fixed deadlock
  * Added --no-thriftbroker to start-all-servers.sh and include this option in integration tests
  * Added property Range.MaximumSize (default is 3G)
  * Renamed Range.MaxBytes to Range.SplitSize
  * Updated to version 0.9.2.4; fixed some warnings
  * Fixed performance regression in select command.
  * Added CellStoreV1 with 64-bit support
  * Fix for race condition in range size throttling
  * Throttling is done by forcing the RangeServer::update call to wait for maintenance
     completion on ranges which indicate that they are too big.
  * Added API for getting hyperspace session from client object
  * Checked in changes to Thriftbroker so that is works with recent Thrift version.
  * Updated README to include location of new working thrift snapshot.
  * Added support for selecting data into a compressed (gzip) file.
  * Added regression test for select into gzipd file
  * Added exit scope guard to cmd_select and cmd_load in HqlInterpreter so that the open output file is always closed.
  * Refactored LoadDataSource class to make it an interface for different sources.
  * Added derived classes LoadDataSourceFileLocal and LoadDataSourceStdin
  * Added LoadDataSourceFactory to create LoadDataSource objects
  * Added regression test for LoadDataSourceStdin
  * Modified ServerLauncher to open output files in append mode.
  * Added CellStoreFactory
  * Added instrumentation to TableInfo
  * Added CellStoreBlockIndex abstraction; Parameterized CellStoreScanner
  * Fixed overflow problem with METADATA table
  * Also fixed code to respect Hypertable.RangeServer.Range.MetadataMaxBytes
  * Fixed serialization bug in Hyperspace client Protocol.
  * Added support for attr_exists in the Hyperspace master for improved efficiency.
  * Added regression test for attr_exists in BerkeleyDb test.
  * Added Hyperspace attr_list API
  * Added support for "attrlist" and "attrexists" in Hyperspace shell.
  * Added Hyperspace shell regression tests for "attrlist" and "attrexists".
  * Made LocalBroker::rmdir a little more robust
  * Fixed problem that caused spurious "Hyperspace session expiration" errors
  * Fixed memory corruption in CommitLogReder error handling logic
  * [issue 246] Commit log not getting garbage collected
  * Set URGENT bit on Hyperspace keepalive packets
  * Set URGENT bit on some other RangeServer requests such as status and shutdown
  * Fixed rowkey access group imbalance problem (causing ROW OVERFLOW errors)
  * Added regression test RangeServer-rowkey-ag-imbalanc
  * Got KosmosBroker compiling with latest KFS code
  * Modified load_generator to make DataGenerator specification opitonal with --spec-file
  * Fixed "this should never happen" problem in Maintenance scheduler
  * Fixed split log garbage collection
  * Makes hypertable build with gcc 4.3.3 on Ubuntu
  * Fixed bug in scan limit feature and added regression test.
  * Created load generator tool to test performance for synthetic update/query loads.
  * Created DiscreteRandomGenerator to generate integer distributions.
  * Created ZipfRandomGenerator to generate random integers from a Zipf distribution
  * Modified existing Random class to add method to generate samples from uniform[0,1]
  * Fixed excessive split problem that caused ROW OVERFLOW errors
  * Fixed trailing comma problem in SHOW CREATE TABLE
  * Removed redundant error message in scanner creation.
  * Added Request throttling
  * Made interval scanner initial creation asynchronous.
  * Maintenance scheduler overhaul
  * [issue 268] RangeServer methods now verify table name
  * Added DataGenerator class for generating simulated data
  * Added ht_generate_data program with example configs in examples/generate_data
  * Added support for gcc 4.[345] in FindBoost for user compiled boost libraries.
  * CellCache.PageSize default back to 512K; Fixed CellCachePool::memory_used()
  * CellCachePool::memory_used() now returns total allocated from OS minus
  * Free space remaining on current page
  * Instrumenting CellStore and CellCache to track down suspected memory leak.
  * Changed dump_stats method to dump out commit log and per access group memory usage stats.
  * Hooked up dump_stats command to rsclient program.


Version 0.9.2.3:
(2009-03-26)

  * Fixed problem of range getting loaded multiple times
  * Fixed deadlock in AccessGroup::create_scanner (can't hold AG lock while accessing LiveFileTracker)
  * [issue 240] Fixed CellCacheScanner logic to apply deletes correctly.
  * Issue 255: Removed asserts for last errors to avoid ThriftBroker crashing due to bad user input.
  * Upgraded to recent version of Thrift
  * Improving scanner creation error reporting.
  * Fixed intermittent HyperComm-Timeout test issue
  * [issue 262] Fixed race condition between DROP TABLE and range recovery
  * Fixed problem with split-recovery 3 & 7
  * Eliminated circular reference to Range that was preventing Range destruction
  * Issue 225: Fixed/improved table identifier and schema caching mechanism.
  * Also fixed an issue in IntervalScanner that was silently ignoring errors.
  * Switch to openssl for md5 in tests for better portability.
  * Updated thrift documentation on Cell as array interface.
  * Upgraded FindBoost to support 1.38
  * Changed random_read_test to use new config/property system
  * Added --flush option to random_write_test to flush after every write
  * Changed default # of maintenance threads in RangeServer to min(2, number-of-cores)
  * Changed seek+read to pread in HdfsBroker::PositionRead
  * Fixed RangeServer to return TABLE_NOT_FOUND errors when table not found
  * Issue 253: Alternative thrift interface for cells as arrays.
  * Got rid of hardcoded 30000 ms timeouts in Master
  * Added CommitLog.PruneThreshold.Max.MemoryPercentage (default 75)
  * Changed AccessGroup.MaxMemory to 1GB by default
  * Got rid of various Timeout properties in favor of just Hypertable.Request.Timeout
  * Set most timeouts to 180ms
  * [issue 258] Minor issue with incorrect time units in Thriftbroker timeout.
  * Explicitly flush output streams at a few places until we don't have to _exit.
  * Modified CellCache::memory_used() to return accurate info from underlying pool
  * Fixed AccessGroup recovery problems for IN_MEMORY access groups
  * Made CellCache memory pool page size configurable
  * Introduced Hypertable.RangeServer.AccessGroup.CellCache.PageSize, default is 100KB


Version 0.9.2.2:
(2009-03-04)

  * Added support for ALTER TABLE
  * Addded Bloom Filter to CellStore
  * Added calls to _exit in random_read/write benchmark programs to avoid static destruction
  * [issue 251] Eliminated race condition between load_range and drop_table
  * Upgraded to Hadoop 0.19.1
  * [issue 245] Fixed segfault problem with splits and multiple AGs
  * Updated thrift support for new namespace changes in the upstream library
  * Added missing columns in the thrift scan spec
  * Added more scanner/mutator examples for various languages
  * Updated README link to the new recommended thrift snapshot
  * Made CellStore::create API more generic
  * Added row_len and column_qualifier_len in Key to save repeated strlens
  * Enabled Bloom filter by default
  * Fixed crash in TableMutator if global config properties are not initialized
  * Added floating point support for properties
  * Fixed broken each_cell and with_mutator methods in ruby thrift client
  * Wrapped with_* methods in ensure block
  * Added tests for scanner and mutator usage
  * Issue 229: fixed some warnings with gcc 4.3+
  * [issue 239] Made serverup respect --wait value in all places
  * [issue 246] Fixed commit log GC problem
  * Upgraded to Quicklz 1.4 and made quicklz the default compressor for CommitLog
  * [issue 245] Use broker-assigned strictly increasing fds in KosmosBroker
  * [issue 234] Made wait for Hyperspace respect supplied timeout
  * [issue 127] Made Hyperspace server detect suspension and extend leases
  * [issue 231] Fixed problem where CellStoreV0::add return value was getting ignored
  * [issue 238] Fixed crash problem during RangeServer::replay_update
  * [issue 235] Eliminated abort after split attempts fail
  * [issue 236] Fixed hang problem on CentOS 5
  * Fixed a range server restart issue by overwriting tmp explicitly
  * Added wait logic in Master when root METADATA range server is down
  * Fixed problem where drop_table was executed during a range split causing bad RSML sequence
  * Got rid of an assert in the Comm layer on bad header
  * Fixed problem where 'Files' column not updated properly after split
  * Fixed problem where Gc.Interval was being treated as seconds
  * Changed a number of programs to exit using _exit to avoid static destruction problems
  * Fixed problem caused by invalid initializations of rssstat (Hiroyuki)
  * Made stopping servers faster by waiting in parallel
  * Leave RSML alone in case of errors
  * Refactored bash specific commands in Capfile into a separate script
  * Disable thrift broker API logging by default
  * Issue 190: Reverted to the METADATA sanity check since RangeLocator is fixed


Version 0.9.2.1:
(2009-01-22)

  * Added ulimit -c unlimited to the top of start-thriftbroker.sh
  * Fixed NULL pointer dereference in LoadDataSource on bad input
  * Fixing another Hyperspace deadlock (tied up reactor thread)
  * Added logic to retry open of Hyperspace file /hypertable/tables/METADATA
  * Make sure RangeServer gets killed in between runs of range split recovery test.
  * Fixing deadlock in Hyperspace session lease renewal logic.
  * Bumped up data size for split recovery tests to ensure crashes
  * Remove local fs in clean-database.sh even if dfsbroker is not running
  * Fixed initialization race condition in Master
  * Commented out MetaLog-Master test
  * Fixed version generation for testing with unsuccessful merges
  * Fixed reactor thread deadlock in Hyperspace
  * Fixing race condition in RangeServer recovery that was causing Hypertable master to crash.
  * Eliminated DfsBroker test dependency on /usr/share/dict/words
  * Eliminated reference to deprecated class TException in ruby client test
  * Changed MasterClient to throw exceptions
  * Fixed deadlock in Hyperspace
  * Updated thrift API documentation
  * make doc (and thriftdoc) now generate thrift api doc as well
  * Fixed problem with LocalBroker where it was closing the wrong descriptor because of reuse
  * Fixed a CommitLog serialization problem introduced with commit a58dce91b4059b022921287a43d7afb669380d0b
  * Augmented multiple-maintenance-threads test to run a "SELECT *" in the background once per second
  * Cleaned up logic that manages 'Files' column contents in AccessGroup
  * Cleaned up error handling logic in many places
  * Fixed split retry logic after exception
  * Renamed CrashTest class to FailureInducer and added support for throwing exceptions
  * Added 'RangeServer-load-exception' test to validate proper retry when load_range, invoked after split, throws an exception
  * Added MicrosecondLayout class in Logger.cc for adding microseconds to timestamps in log messages
  * Augmented the multiple-maintenance-threads test with a second dump to see if it's a transient error if the first run comes up short
  * Also added a note in README about force restart test servers
  * Fixed random segfaults upon exit in random_*_test and serverup
  * Coding convention cleanups
  * [issue 222] Fixed race condition in RangeServer::update introduced with SplitOff=high
  * Cleaned up start up scripts
  * Renamed top-level 'test' directory to 'tests' for some platforms
  * CMake file changes to restart test servers automatically
  * Cleaned up header files to reduce dependency on Config.h hence Version.h
  * Fixed a few issues with FindBoost.cmake
  * Added .gitignore for *.pyc
  * Made some integration tests runnable via make test
  * [issue 188] Added support for URGENT CommHeader flag
  * Did some work on server-side request timeout

Version 0.9.2.0:
(2009-01-05)

  * Fixed initialization problem that caused ConnectionManager thread to exit immediately
  * Fixed build for boost 1.35+
  * Issue 209: Fixed build with gcc 4.3+
  * [issue 216] Fixed problem where clock skew was causing updates to be dropped
  * [issue 201] Fixed deadlock recently introduced with support for SplitOff=high
  * Made commit log more robust
  * Added calls to FSDataOutputStream.sync() for FLUSH for HdfsBroker
  * Fixed range server metalog reader
  * Made RangeServer::load_range() call in Master::report_split() synchronous
  * Fix for ReactorRunner to not use handle if de-registering its fd failed
  * Fixed and expanded split-recovery integration test
  * Worked around compiler (gcc 4.1 vs 4.0) quirks in overloading
  * Fixed a bug in converting hypertable cell to thrift cell that was setting the
     wrong column qualifiers in subsequent cells that don't have column qualifiers.
  * [issue 193] Added table generation to CellStoreTrailer
  * [issue 206] Fixed problem where CommitLog fd gets into bad state
  * Fixed race condition in RangeServer::load_range (reported by Phoenix)
  * Wrapped compaction logic in try/catch block to ensure maintenance bit gets cleared on exception (reported by Phoenix)
  * Added support for Hypertable.CommitLog.SkipErrors (default is now ASSERT)
  * Got rid of shutdown segfault in ReactorRunner by only printing LOG message if !shutdown
  * Added support for Hypertable.RangeServer.CommitLog.Flush
  * Got rid of Kfs.Broker.Flush property (in favor of Hypertable.RangeServer.CommitLog.Flush)
  * Expanded split-recovery integration test
  * Updated README to include a link to a working snapshot of thrift
  * Fixed timeout usage in various language bindings
  * Also added destructors (or similar mechanism) to close transport
  * Fixed some javac dependency issues caused by package/path mismatch
  * Added a boolean flag to allow Client::open_table to bypass cache
  * Made spirit parsers thread safe
  * Allow hypertable clients to take different config files
  * Fixed custom validate issues with properties
  * Added regression tests for Properties
  * Fixed Hyperspace callback signature for 'master' file
  * Added options to skip errors in metalogs (default throws)
  * Updated regression tests for range server metalog
  * FindBoost.cmake fix for Boost 1.37
  * Changed type of Kfs.Broker.Flush from i32 to bool

Version 0.9.1.1:
(2008-12-23)

  * Changed default value for Hypertable.RangeServer.CommitLog.RollLimit back to 100MB
  * [issue196] Added escape/unescape logic to select and LDI
  * Eliminated race condition that caused ASSERT with multiple maintenance threads
  * Got rid of alignment logic in CellCachePool
  * Changed 'range not found' error to info message in RangeServer::create_scanner
  * Fixed seg fault during construction of 2nd Client object
  * Fixed bug in MetadataRoot::get_next_files
  * Added commit log gc integration test
  * Fixed bug in commit log gc logic
  * [issue162] Fixed pread bug in HdfsBroker
  * Upgraded to Hadoop 0.19.0
  * Fixed seg fault in Comm destruction sequence
  * Fixed shutdown logic in ConnectionManager
  * Changed default value for Hypertable.RangeServer.Range.SplitOff property to "high"
  * Fixed problem with System::locate_install_dir for binaries running outside a normal installation
  * Fixed some Timer problems introduced with millisecond change
  * Plumbed debug() method through Filesystem class down into brokers
  * Fixed seg fault in serverup on shutdown
  * Fixed cmake FindKfs logic
  * More build dependency cleanups (now truely independent of thrift)
  * Finished support for Hypertable.RangeServer.Range.SplitOff=(high|low)
  * Added aol-time-order integration test to validate proper functioning of 'high' mode
  * Wait for all DFSBroker files to close before removing directories
  * Made thrift support really (it was intend to be but not) optional
  * Made version number more accurate as well.
  * Fixed cyclic dependency between Common and AsyncComm libraries
  * Fixed some Capfile issues; added test/integration
  * Reorganized the toplevel test directory a bit
  * Added a doc/README that points people to hypertable.org
  * Removed ThriftBroker startup dependency on /hypertable/tables/METADATA hyperspace file
  * Also fixed hang/crash problem in Comm::~Comm

Version 0.9.1.0:
(2008-12-08)

  * Added a simple thrift broker for hypertable services
  * Fixed build issues and warnings on 64-bit CentOS
  * Use CMAKE_DL_LIBS instead of -ldl for portability
  * Coding convention cleanups
  * Fixed a race condition in Master::report_split
  * Added CellCache memory pool + fixed memory accounting
  * Made Hyperspace command shell utility reuse Hypertable command shell code.
  * Fixed crash with > 1 maintenance threads
  * Fixed ROW_OVERFLOW regression
  * [issue 177] Changed all integers written into Hyperspace into ASCII strings
  * Added better diagnostic output for checksum mismatch errors
  * Changed all timeouts from seconds to milliseconds
  * Upgraded Comm header
  * Fixed crash in INSERT command with columns with no qualifiers
  * Added (optional) timer to Hyperspace and Master clients
  * Fix for issue#170.
  * Hypertable Client now contains a RangeLocator
  * Refactored Config to allow easy composition of component policies
  * Adopted SIGAR for cross-platform system info/stat
  * Added MT-safe/faster code to parse ip address
  * Issue 156: simple row/range level transaction support
  * Removed extra connection manager for METADATA table used by Master
  * Preserve column family order in HQL schema
  * Refactored out HqlInterpreter from HqlCommandInterpreter
  * Added support for RAII idiom with ScopeGuard and friends
  * Added a generic Locker for any object with lock/unlock methods
  * Added HT_ASSERT as a short cut of HT_EXPECT(expr, Error::FAILED_EXPECTATION)
  * Worked around StringUtil::vform problem in log4cpp 1.0 for certain platforms.
  * Refactored handle_event a bit to reduce code duplications
  * Fixed a few (nread < 0) cases, where nread is size_t.
  * Added System::rand64()
  * Updated installation instructions based on feedbacks
  * Cleanups for gcc 4.3+
  * Made HypertableJavaComponents a cmake target
  * Refactored FindKfs.cmake
  * Added a few missing ", or any later version." to GPL license blurbs
  * Fixed a situation where some cellstores are not GC'ed
  * Made some metalog entry errors non-fatal
  * Fixed column family TTL feature and added regression test for it. (Issue #160)


Version 0.9.0.12:
(2008-11-08)

  * Fixed TableMutatorScatterBuffer hang problem
  * Fixed bug in MergeScanner and added optimized MergeScanner for scans with m_return_deletes
  * Upgraded to Hadoop 0.18.2
  * Fixed random read performance regression
  * Fixed descriptor leak in HdfsBroker
  * [issue 166] Fixed problem of bad disk usage accounting which caused SEGFAULT
  * Added log rotation via cronolog
  * Added option for dump_metalog to copy a metalog
  * Bump the stream log buffer size to 4KB for longer backtrace
  * Added --wait option for serverup serverup dfsbroker had been timing out too soon
  * Fixed default timestamp value on the KeySpec contructor args
  * Added more detailed error info for unexpected metalog entries
  * Fixed a race condition in update while local recovery is in progress
  * Removed old code that was causing last_table_id resetting to 0 upon Master restart.
  * Use thread-safe gethostbyname_r on linux (was causing SEGFAULT)

Version 0.9.0.11:
(2008-09-30)

  * Fixed problem with commit log garbage collection
  * Overhaul: cleaned up AccessGroup compaction logic
  * Overhaul: separated timestamp from revision number
  * Overhaul: eliminated timestamp order restriction
  * Overhaul: cleaned up RangeServer::update()
  * Check for bad column name in ScanSpec and throw exception
  * Upgraded to Hadoop 0.18.1
  * Add support for qualified columns in LOAD DATA INFILE
  * Got SELECT ... INTO FILE working again
  * Updated README to include log4cpp patch instructions
  * Fixed NULL pointer deref in BMZ on uncompressible data
  * [issue154] Fixed problem in MergeScanner causing max_versions probs
  * Fixed retry logic inside IntervalScanner
  * Added a RangeServer::get_statistics() method and rsstat tool (Donald)
  * Fixed a number of issues getting KFS broker up and running
  * Modified Capfile to allow a dfs= variable override to specify which dfs.
  * Modified scripts to only test for servers on localhost

Version 0.9.0.10:
(2008-08-14)

  * Fixed range loss problem when can't write RSML during split
  * Fixed Hyperspace to retry txn upon BDB deadlock exception
  * Fixed a bug in RangeServer::schedule_log_cleanup_compactions that prevents log cleanup compactions from happening. (thanks Donald)
  * Made Hyperspace client throw exceptions
  * Changed epoll to level triggered for < 2.6.17, edge triggered for newer
  * Fixed problem in HdfsBroker which caused it to close all handles
  * Fixed problem with accept() logic in edge-triggered mode
  * Fixed problem in FindBerkeleyDB.cmake also fixed link problem in dfsclient
  * Got rid of all calls to rand(), etc.  More work on random benchmark tools
  * Moved rand startup wait out of RangeServer and into Capistrano
  * Added full deprecation warnings to build
  * Eliminated infinite loop in AsyncComm; Fixed HdfsBroker shutdown
  * Upgraded TableReader::next(...) output values so that not only key but also column family and qualifiers are known to the reducer
  * Initial checkin of freebase example

Version 0.9.0.9:
(2008-08-03)

  * Fixed Linux epoll problems
  * Removed deadlock in Master::drop_table()
  * Modified shutdown scripts to wait for service shutdown before returning
  * Changed default listen() pending connection backlock from 64 to 1000
  * Modified RangeServers to wait random interval [0..2] secs before starting

Version 0.9.0.8:
(2008-08-01)

  * Added schema cloning (CREATE TABLE x LIKE y) (thanks to bithckr)
  * Fixed a potential macro redefinition in compat-c.h (thanks to Leon Mergen)
  * Clarified some documentation based on user feedback
  * Added fix for ignored 'try' in Hyperspace try_lock (thanks to liaoguangxian)
  * Added CELL expressions
  * Fixed bad reference to freed Hyperspace Session object
  * ported mapreduce connector to the newer API
  * Changed Hypertable::Client constructor to accept install dir
  * Got TableScanner working with multiple row intervals
  * Overhauled HQL WHERE clause (scan predicate)
  * Modified ScanSpec to include vector of row ranges; Added ScanSpecBuilder
  * Set TOS field on Hyperspace UDP packets to Minimize delay
  * Fixed deadlock issues in RangeServer during replay
  * Added drop_table RangeMetaLog entry
  * Overhauled launch scripts; Upgraded to Hadoop 0.17.1
  * Avoid using fs->length(path) to judge whether a RangeServerMetaLog file is empty, which doesn't work well in Hadoop DFS.
  * Fixed a bug in Read/PositionRead due to misuse of readFully().

Version 0.9.0.7:
(2008-07-18)

  * Got RangeServer recovery working
  * Added shutdown command to hypertable command interpreter
  * Fixed ApplicationQueue spin problem (c++ & java) plus other bugs
  * Merged in Mateusz Berezecki's Hadoop MapReduce contribution
  * Added random_write_test
  * Made Comm a singleton as intended
  * Added explicit Hyperspace session destroy mechanism
  * Changed epoll usage from level to edge triggered
  * Added option to preserve key columns as regular columns
  * Upgraded to latest KFS code
  * Check for and throw exception on bad scan spec (start > end)
  * Added ROW_UNIQUIFY_CHARS option to LOAD DATA INFILE
  * Added utility to dump metalog
  * Added convenient constructor (host, port) for DfsBroker client.
  * Added version check in case of shared libraries
  * Added Hypertable::Config to make init easier
  * Added a regression test to ensure that deletes are retroactively applied
  * [issue 120] Fixed problem with MergeScanner not properly handling deletes
  * [issue 118] Fixed segfault on empty .tsv line; Fixed output supress flags
  * [issue 119] Fixed problem where end timestamp was getting ignored
  * Doc: added notes on shared library install usage.
  * Cleanup build documentation
  * Avoid hash_value redefintion with boost 1.35+
  * Build: link libraries cleanup
  * [issue 115] Fixed Hyperspace Berkeley DB deadlock problem
  * Fixed Master error handling logic in create_table
  * Fixed link problem on XCode 2.4
  * Added RangeServer metalog classes and tests
  * Use native 'exists' instead of 'get' for BDB FS 'exists' calls.
  * Made BDB FS do basic recovery on init
  * Added support to print "pretty functions" in exception trace
  * Changed TableIdentifierCopy etc. to *Managed for what they really are
  * Added some documentation for tricky part of DynamicBuffer
  * Updated serialization test for str16 and bytes32
  * remove HT_TRY_DECODE in favor of HT_TRY
  * Added script to find & replace with perl regex
  * Coding convention/guideline sweep

Version 0.9.0.6:
(2008-06-14)

  * Ported Hyperspace to Berkeley DB
  * Fixed core dump in HdfsBroker when --verbose is not set
  * [issue 110] Fixed scanner infinite looping on large objects
  * Fixed buffer overrun problem in Hyperspace keepalive message
  * Cleaned up TableMutator retry logic
  * Made cmake 2.6 compatible.

Version 0.9.0.5:
(2008-06-03)

  * Made size of location cache configurable; set default to 1M
  * [issue 67] fixed bad free in comm layer
  * Fixed log fragment GC problem
  * Fixed race condition in LocalBroker::close()
  * Fixed doxygen comments; Updated Doxyfile to exclude boost fix dir
  * [issue 99] Added TableMutator::retry()
  * [issue 18] Added support for '~' expansion in hypertable
  * [issue 10] Implemented proper serialization for Serialization.h functions
  * [Issue 104] Fixed hang problem in HdfsBroker
  * Changed serialization byte ordering to little endian
  * Purge old cells to avoid repeated deletion of old files
  * Various portability fixes
  * [Issue 71] Fixed lagging scanners referencing GC'd CellStore problem
  * Added release callback to MergeScanner
  * Added GC support for issue 71 (race condition while compaction/scanning)
  * Added Filesystem::rename and friends
  * Added flush option to Filesystem::append and friends
  * [issue 41] Fixed CellCache::purge_deletes problem
  * Got RANGESERVER_ROW_OVERFLOW error propagating back to client
  * Upgraged to Hadoop 0.16.4
  * Overhauled Client library to send errors back as deltas
  * Added mutex class to accomodate changes in boost 1.35+
  * Fixed ambiguous operator+ overload problem
  * Created new StaticBuffer class which is now used in all internal APIs
  * Added destructor to Buffer class
  * Cleaned up DynamicBuffer and Buffer
  * Rearranged for better branch prediction in encoded_length_vi*
  * Switched to a more reliable signal facility (sigaction)
  * Got rid of some warnings on release build
  * Fixed compile problem on Ubuntu
  * Got rid of ByteString32 in favor of vint ByteString
  * Moved Serialization.h and its tests to Common
  * Added decode_i8 and regression tests.
  * Refactored BufferT and ExtBufferT usages to use Common/Buffer
  * Changed format of buffer passed to replay_update();
  * Added portable serialization code:
  * Added support for exception chaining.
  * Changed append API to reflect the ownership change of write buffer
  * Added include for stricter compilers (e.g. gcc 4.1.2)
  * Changed TableIdentifierWrapper to TableIdentifierCopy
  * Got rid of the EncodedLength/Encode/Decode functions from Types.h
  * Implemented RangeServer::replay_update
  * Modified RangeServer::load_range to include RangeState object
  * Fixed some build problems on mac (because of newly added dependencies)
  * Enhanced LOAD DATA INFILE to accept alt. header file and zipped files
  * Fixed free memory used problem and got rid of warnings
  * Added REQUEST_TIMEOUT exception to client; upgraded to Hadoop 0.16.3
  * Added wrapper for high res time
  * Added timeouts to TableMutator and TableScanner
  * Changed RangeServerClient to throw exceptions
  * Made scan spec public fields naming consistent with the rest of the API
  * Logging cleanup; now redirectable; flushable; added stream macros
  * Made ReferenceCount noncopyable
  * Fixed a leaking corner case in Hypertable::format
  * Added RangeState and re-organized Range split logic
  * Added TableIdentifierWrapper and RangeState
  * Allow keys to be built from multiple columns in LOAD DATA INFILE
  * Fixed segfault caused by race condition in sampleClient
  * Commit log re-write
  * Fixed HdfsBroker::rmdir to return FileNotFound
  * Moved header checksum to end of header; Improved split row selection
  * FS interface cleanup. Use exception where appropriate.
  * Cleaned up BlockCompressionHeader code
  * Fixed bug in startup scripts related to hadoop upgrade
  * Fixed initialization order problem in RangeServer
  * Cleaned up CommitLog types and added doxygen comments
  * Added smart pointers to MetaLog readers
  * Finished adding exists method to DfsBroker client
  * Added exists() method to Filesystem interface; Upgraded to Hadoop 0.16.2
  * Fixed regressions due to the license preamble change
  * Wrap long lines in license preambles.
  * Delete cruft in attic along with the attic
  * Modified ApacheLogParser to handle .gz files
  * Put time formatting in a function for apache_log example
  * Changed ApacheLogEntryT to ApacheLogEntry
  * Cleaned up and improved apache_log example
  * Got rid of error codes in Client API in favor of exceptions
  * Types name change; Comment header update
  * First cut of meta log API
  * More build cleanups: move generic definitions outside gcc macros; support gcc 3.4.x
  * Use our faster implementations by default and rename wikipedia based impls to *_wp
  * Reorganized Range split logic for new MetaLog implementation
  * Fixed bug that was causing default CellStore compressor to be "none"
  * Changed so SplitPoint and SplitDir are passed through Master
  * Got rid of split_timestamp
  * Dropped timestamp from location string
  * Handle large files on 32-bit systems.
  * Fixed problem loading .tsv files > 2GB on Linux
  * Changed argument of RangeServer::drop_table to TableIdentifierT
  * Fixed IN_MEMORY loading problems (issue #66)
  * Fixed initialization problem in hypertable command interperter
  * Added replay commands to rsclient; Added RangeServer::drop_range()
  * Implemented RangeServer::replay_start and replay_commit
  * Got rid of boost program_options hack
  * Build and install cleanups.
  * Ported rsclient to new command line shell framework
  * Abstracted command line shell into class that can be shared
  * Fixed a few small (seemingly innocuous) issues in AsyncComm
  * Fixed memory tracking
  * Added complete TableIdentifier into CommitLog entry headers
  * Created TableInfoMap class to prepare for "replay" map
  * Added plumbing for RangeServer replay methods
  * Modified ScannerTimestampController to store Timestamp objects
  * Fixed FindBoost.cmake on Redhat 4u3
  * Changed CMakeLists.txt files to facilitate use of other malloc packages

Version 0.9.0.4:
(2008-02-27)

  * Added code to check boost and apply fixes if necessary
  * Fixed issue #47 Cleaned up DROP_TABLE handling in RangeServer and Client
  * Fixed issue #63 Dropped updates under concurrent loading
  * Fixed race condition in Master between server join & register
  * Fixed RangeServer hang after TIMESTAMP_ORDER_ERROR error
  * Fixed performance bug that was hurting random reads

Version 0.9.0.3:
(2008-02-19)

  * Fixed bug in MergeScanner where deletes were being wrongly applied
  * Detect and report "supplied timestamps not strictly increasing" error
  * Added testing options KEYS_ONLY and RETURN_DELETES to SELECT statement
  * Removed unused tests and associated data to bring source tarball below 20MB
  * Modified ApacheLogParser to return non-coliding timestamps for requests that happened in the same second

Version 0.9.0.2:
(2008-02-12)

  * Made all timestamps interpreted as GMT (issue #56)
  * Catch table scanner / mutator exceptions in Master GC logic (issue #55)
  * Fixed Master abort when last_table_id attribute of /hypertable/master not found
  * Modified kosmosBroker properties to be capitalized camel case

Version 0.9.0.1:
(2008-02-07)

  * Fixed compile errors on Ubuntu, FC5 and FC6
  * Got rid of AsyncComm regression dependency on /usr/share/dict/words
  * Fixed critical GC bu that deleting good MEATADATA rows
  * Fixed FindBoost.cmake to work if only .so files are installed