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https://issues.apache.org/jira/browse/HDFS-15781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leon Gao updated HDFS-15781:
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Summary: Add metrics for how blocks are moved in replaceBlock (was: Add
metrics for block movemements)
> Add metrics for how blocks are moved in replaceBlock
> ----------------------------------------------------
>
> Key: HDFS-15781
> URL: https://issues.apache.org/jira/browse/HDFS-15781
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Leon Gao
> Assignee: Leon Gao
> Priority: Minor
>
> We can add some metrics for to track how the blocks are being moved, to get
> a sense of the locality of movements.
> * How many blocks copied to local host?
> * How many blocks moved to local disk thru hardlink?
> * How many blocks are copied out of the host
>
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