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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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Aiphago updated HDFS-15382:
---------------------------
    Fix Version/s: 2.9.2
                   3.2.1

> Split DataNode FsDatasetImpl 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
>             Fix For: 2.9.2, 3.2.1
>
>
> 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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