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https://issues.apache.org/jira/browse/HDFS-3037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13410301#comment-13410301
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Hudson commented on HDFS-3037:
------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #309 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/309/])
    svn merge -c 1296016 FIXES:  HDFS-3037. 
TestMulitipleNNDataBlockScanner#testBlockScannerAfterRestart is racy. 
Contributed by Aaron T. Myers. (Revision 1359247)

     Result = SUCCESS
daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1359247
Files : 
* 
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* 
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestMulitipleNNDataBlockScanner.java

                
> TestMulitipleNNDataBlockScanner#testBlockScannerAfterRestart is racy
> --------------------------------------------------------------------
>
>                 Key: HDFS-3037
>                 URL: https://issues.apache.org/jira/browse/HDFS-3037
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.24.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>            Priority: Minor
>             Fix For: 0.23.3, 2.0.1-alpha, 3.0.0
>
>         Attachments: HDFS-3037.patch
>
>
> In this test, we restart a DN in a running cluster, call MiniDFS#waitActive, 
> and then assert some things about the DN. Trouble is, 
> MiniDFSCluster#waitActive won't wait any time at all, since the DN had 
> previously registered with the NN and the NN never had time to realize the DN 
> was dead.

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