Skip to content

BlockCachingCommand

Jump to bottom
John King edited this page Sep 2, 2016 · 1 revision

BlockCachingCommand

A BlockCachingCommand (called a BlockIdCommand in Hadoop) is an instruction to a DataNode regarding some blocks under its control. This instruction will be one of the following:

1. Cache the specified blocks
2. Uncache the specified blocks

All this command requires is the list of block IDs and the action to be taken.

Clone this wiki locally