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https://issues.apache.org/jira/browse/HDFS-1840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025943#comment-13025943
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Cheng Leong commented on HDFS-1840:
-----------------------------------
yeah exactly. I was just surprised that no one else is seeing the same
performance issue, otherwise your fix should be prioritized? (0.23 is like a
couple years away) Maybe my question should be, have you seen JobTracker's
performance being impacted by this bug before?
> Terminate LeaseChecker when all writing files are closed.
> ---------------------------------------------------------
>
> Key: HDFS-1840
> URL: https://issues.apache.org/jira/browse/HDFS-1840
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.23.0
>
> Attachments: h1840_20110418.patch, h1840_20110419.patch,
> h1840_20110419b.patch
>
>
> In {{DFSClient}}, when there are files opened for write, a {{LeaseChecker}}
> thread is started for updating the leases periodically. However, it never
> terminates when when all writing files are closed.
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