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https://issues.apache.org/jira/browse/HDFS-15382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shilun Fan updated HDFS-15382:
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Component/s: datanode
Target Version/s: 3.4.0
Affects Version/s: 3.4.0
> Split one FsDatasetImpl lock to volume grain locks.
> ---------------------------------------------------
>
> Key: HDFS-15382
> URL: https://issues.apache.org/jira/browse/HDFS-15382
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 3.4.0
> Reporter: Mingxiang Li
> Assignee: Mingxiang Li
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: HDFS-15382-sample.patch, image-2020-06-02-1.png,
> image-2020-06-03-1.png
>
> Time Spent: 5h 10m
> Remaining Estimate: 0h
>
> 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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