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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-3933) Unclean exit in ReplicationMonitor#run occasionally causes tests to fail
Date Tue, 18 Sep 2012 01:13:08 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins resolved HDFS-3933.
-------------------------------

    Resolution: Duplicate

Now that we can see the root cause, this is a dupe of HDFS-3936.

{noformat}
2012-09-13 18:22:07,575 FATAL [main] hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1355))
- Test resulted in an unexpected exit
org.apache.hadoop.util.ExitUtil$ExitException: Fatal exception with message null
stack trace
java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getBlockCollection(BlocksMap.java:101)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1132)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1107)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3061)
at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3023)
at java.lang.Thread.run(Thread.java:662)
{noformat}
                
> Unclean exit in ReplicationMonitor#run occasionally causes tests to fail 
> -------------------------------------------------------------------------
>
>                 Key: HDFS-3933
>                 URL: https://issues.apache.org/jira/browse/HDFS-3933
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>
> I've seen the following in jenkins jobs for TestHadoopArchives and  TestBlockTokenWithDFS.
We're not getting the initial ExitException thrown by ReplicationMonitor, just the log of
the ExitException in MiniDFSCluster shutdown. Looks like the ExitException has no message
so the throwable that resulted in the ExitException has no message, in which case it would
be useful to capture the whole stacktrace of the throwable.
> {noformat}
> 2012-09-12 18:22:08,370 FATAL [main] hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1355))
- Test resulted in an unexpected exit
> org.apache.hadoop.util.ExitUtil$ExitException
> 	at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:86)
> 	at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:104)
> 	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3031)
> 	at java.lang.Thread.run(Thread.java:662)
> {noformat}

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