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https://issues.apache.org/jira/browse/HDFS-2994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13741523#comment-13741523
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Konstantin Shvachko commented on HDFS-2994:
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+1.
I just committed this to trunk, branch-2, and branch-2.1. Thank you Tao.
Leaving it open for porting into branch-2.0.
LMK if this should go into 2.1.0 or 0.23.
> If lease soft limit is recovered successfully the append can fail
> -----------------------------------------------------------------
>
> Key: HDFS-2994
> URL: https://issues.apache.org/jira/browse/HDFS-2994
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.24.0
> Reporter: Todd Lipcon
> Assignee: amith
> Attachments: HDFS-2994_1.patch, HDFS-2994_1.patch, HDFS-2994_2.patch,
> HDFS-2994_3.patch, HDFS-2994_4.patch
>
>
> I saw the following logs on my test cluster:
> {code}
> 2012-02-22 14:35:22,887 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: startFile: recover lease
> [Lease. Holder: DFSClient_attempt_1329943893604_0007_m_000376_0_453973131_1,
> pendingcreates: 1], src=/benchmarks/TestDFSIO/io_data/test_io_6 from client
> DFSClient_attempt_1329943893604_0007_m_000376_0_453973131_1
> 2012-02-22 14:35:22,887 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Recovering lease=[Lease.
> Holder: DFSClient_attempt_1329943893604_0007_m_000376_0_453973131_1,
> pendingcreates: 1], src=/benchmarks/TestDFSIO/io_data/test_io_6
> 2012-02-22 14:35:22,888 WARN org.apache.hadoop.hdfs.StateChange: BLOCK*
> internalReleaseLease: All existing blocks are COMPLETE, lease removed, file
> closed.
> 2012-02-22 14:35:22,888 WARN org.apache.hadoop.hdfs.StateChange: DIR*
> FSDirectory.replaceNode: failed to remove
> /benchmarks/TestDFSIO/io_data/test_io_6
> 2012-02-22 14:35:22,888 WARN org.apache.hadoop.hdfs.StateChange: DIR*
> NameSystem.startFile: FSDirectory.replaceNode: failed to remove
> /benchmarks/TestDFSIO/io_data/test_io_6
> {code}
> It seems like, if {{recoverLeaseInternal}} succeeds in {{startFileInternal}},
> then the INode will be replaced with a new one, meaning the later
> {{replaceNode}} call can fail.
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