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https://issues.apache.org/jira/browse/HDFS-12803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Krogen resolved HDFS-12803.
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Resolution: Duplicate
This is a longstanding request tracked in HDFS-5453
> We should not lock FsNamesystem even we operate a sub directory, we should
> refinement the lock
> ----------------------------------------------------------------------------------------------
>
> Key: HDFS-12803
> URL: https://issues.apache.org/jira/browse/HDFS-12803
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 2.7.1, 3.0.0-alpha3
> Reporter: maobaolong
>
> An example:
> If a client is doing mkdir or delete a file, other client will wait for the
> FSNamesystem's lock to do some operation.
> I think we have to refinement the lock. we can lock the parent inode only.
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