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https://issues.apache.org/jira/browse/HDFS-12754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254237#comment-16254237
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Kuhu Shukla commented on HDFS-12754:
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Thank you for the review [~xiaochen]. I will address the test related changes
soon, although checkstyle change that remains seems unnecessary as I mentioned
earlier.
Also,
bq. I think we're saying the same thing here:
dfsClient.closeAllFilesBeingWritten out of the LeaseRenewer's synchronized
block,
This is already being done in the v7 patch. The closeAll Files lock is not
exercised from within the LeaseRenewer lock. What am I missing here?
> Lease renewal can hit a deadlock
> ---------------------------------
>
> Key: HDFS-12754
> URL: https://issues.apache.org/jira/browse/HDFS-12754
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.8.1
> Reporter: Kuhu Shukla
> Assignee: Kuhu Shukla
> Attachments: HDFS-12754.001.patch, HDFS-12754.002.patch,
> HDFS-12754.003.patch, HDFS-12754.004.patch, HDFS-12754.005.patch,
> HDFS-12754.006.patch, HDFS-12754.007.patch
>
>
> The Client and the renewer can hit a deadlock during close operation since
> closeFile() reaches back to the DFSClient#removeFileBeingWritten. This is
> possible if the client class close when the renewer is renewing a lease.
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