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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 16:21:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870034#action_12870034
] 

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

The reason the NPEs aren't failing the test is because they are happening in separate threads
-they are not being picked up by the thread runner and recognised as test failures. As a result,
this test may be failing on other people's machines, its only those systems where people are
looking at the output that the NPE is being spotted.

> 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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