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https://issues.apache.org/jira/browse/HDFS-15382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17444371#comment-17444371
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Yuanbo Liu commented on HDFS-15382:
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The design of splitting data lock by volume seems promising as the size of
volume is getting bigger and bigger nowadays. We're looking forword this patch
could be applied into branch-3. Is anyone working on this JIRA？
> Split FsDatasetImpl from blockpool lock to blockpool volume lock
> -----------------------------------------------------------------
>
> Key: HDFS-15382
> URL: https://issues.apache.org/jira/browse/HDFS-15382
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Aiphago
> Assignee: Aiphago
> Priority: Major
> Attachments: HDFS-15382-sample.patch, image-2020-06-02-1.png,
> image-2020-06-03-1.png
>
>
> In HDFS-15180 we split lock to blockpool grain size.But when one volume is in
> heavy load and will block other request which in same blockpool but different
> volume.So we split lock to two leval to avoid this happend.And to improve
> datanode performance.
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