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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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Jing Zhao resolved HDFS-15781.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
I've committed the patch. Thank you for the contribution, [~LeonG] !
> 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
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> 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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