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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5705) TestSecondaryNameNodeUpgrade#testChangeNsIDFails may fail due to ConcurrentModificationException
Date Wed, 12 Mar 2014 23:29:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13932649#comment-13932649
] 

Hudson commented on HDFS-5705:
------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #5314 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/5314/])
HDFS-5705. Update CHANGES.txt for merging the original fix (r1555190) to branch-2 and branch-2.4.
(arp: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1576989)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> TestSecondaryNameNodeUpgrade#testChangeNsIDFails may fail due to ConcurrentModificationException
> ------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5705
>                 URL: https://issues.apache.org/jira/browse/HDFS-5705
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 3.0.0
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 3.0.0, 2.4.0
>
>         Attachments: hdfs-5705.html, hdfs-5705.txt
>
>
> From https://builds.apache.org/job/Hadoop-Hdfs-trunk/1626/testReport/org.apache.hadoop.hdfs.server.namenode/TestSecondaryNameNodeUpgrade/testChangeNsIDFails/
:
> {code}
> java.util.ConcurrentModificationException: null
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
> 	at java.util.HashMap$EntryIterator.next(HashMap.java:834)
> 	at java.util.HashMap$EntryIterator.next(HashMap.java:832)
> 	at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.shutdown(FsVolumeImpl.java:251)
> 	at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList.shutdown(FsVolumeList.java:218)
> 	at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:1414)
> 	at org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:1309)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1464)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1439)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1423)
> 	at org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.doIt(TestSecondaryNameNodeUpgrade.java:97)
> 	at org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.testChangeNsIDFails(TestSecondaryNameNodeUpgrade.java:116)
> {code}
> The above happens when shutdown() is called in parallel to addBlockPool() or shutdownBlockPool().



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