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add new script VolumeBalancerNew.java for hadoop 2.6+ to rebalance mu…#5
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kavnsir wants to merge 1 commit intokillerwhile:masterfrom
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add new script VolumeBalancerNew.java for hadoop 2.6+ to rebalance mu…#5kavnsir wants to merge 1 commit intokillerwhile:masterfrom
kavnsir wants to merge 1 commit intokillerwhile:masterfrom
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…ltiple disk data on a datanode
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…ltiple disk data on a datanode
What changes were proposed in this pull request?
This PR proposes to support Hadoop 2.6+ for volume rebalancing
Since HDFS-6482, HDFS use the two-level directory structure for block storing, that is
{subdir0 ~ subdir255} / {subdir0 ~ subdir255}, so we can move the same subdir between two volumes.How was this patch tested?
This script has been used in product environment for volume rebalancing, and has a good performance.