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https://issues.apache.org/jira/browse/HDFS-10958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15820137#comment-15820137
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Arpit Agarwal commented on HDFS-10958:
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Cloned this as HDFS-11337 for the branch-2 backport.
The backport required many changes (due to branch divergence from HDFS-10637)
so I'm requesting a careful review of the branch-2 patch too.
> Add instrumentation hooks around Datanode disk IO
> -------------------------------------------------
>
> Key: HDFS-10958
> URL: https://issues.apache.org/jira/browse/HDFS-10958
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Xiaoyu Yao
> Assignee: Arpit Agarwal
> Fix For: 3.0.0-alpha2
>
> Attachments: HDFS-10958.01.patch, HDFS-10958.02.patch,
> HDFS-10958.03.patch, HDFS-10958.04.patch, HDFS-10958.05.patch,
> HDFS-10958.06.patch
>
>
> This ticket is opened to add instrumentation hooks around Datanode disk IO
> based on refactor work from HDFS-10930.
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