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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-615) TestLargeDirectoryDelete fails with NullPointerException
Date Fri, 21 May 2010 14:38:19 GMT

    [ https://issues.apache.org/jira/browse/HDFS-615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869998#action_12869998
] 

Steve Loughran commented on HDFS-615:
-------------------------------------

I'm seeing this too, today, OS/X, my lifecycle enhanced branch
{code}
   [junit] Running org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete
    [junit] Exception in thread "Thread-30145" java.lang.NullPointerException
    [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete.getBlockCount(TestLargeDirectoryDelete.java:77)
    [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete.access$000(TestLargeDirectoryDelete.java:40)
    [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete$2.run(TestLargeDirectoryDelete.java:113)
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 69.069 sec
{code}

Interesting elapsed time, just over a minute, that's the kind of spin-for-over-a-minute kind
of situation that usually implies some timeout has happened but not fed upwards.

> TestLargeDirectoryDelete fails with NullPointerException
> --------------------------------------------------------
>
>                 Key: HDFS-615
>                 URL: https://issues.apache.org/jira/browse/HDFS-615
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0
>         Environment: 64-bit debian 5, 64-bit sun java6, running in a single processor
VM.
>            Reporter: Eli Collins
>            Priority: Minor
>         Attachments: HDFS-615.patch, TestLargeDirectoryDelete.zip
>
>
> I've hit the following failure two out of two times running "ant test" at rev 813587.
This test doesn't appear to be failing on hudson. All other tests passed except TestHDFSFileSystemContract
which timed out, so perhaps there's a race due to the test executing slowly. 
>     [junit] Running org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete
>     [junit] Exception in thread "Thread-30148" java.lang.NullPointerException
>     [junit] 	at org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter.getNamesystem(NameNodeAdapter.java:32)
>     [junit] 	at org.apache.hadoop.hdfs.MiniDFSCluster.getNamesystem(MiniDFSCluster.java:522)
>     [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete.getBlockCount(TestLargeDirectoryDelete.java:75)
>     [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete.access$000(TestLargeDirectoryDelete.java:38)
>     [junit] 	at org.apache.hadoop.hdfs.server.namenode.TestLargeDirectoryDelete$1.run(TestLargeDirectoryDelete.java:90)
>     [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 94.264 sec
>                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^  No failures or errors?
>   public static FSNamesystem getNamesystem(NameNode namenode) {
>     return namenode.getNamesystem();                                                
          <===========
>   }

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