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Date: Sun, 20 Nov 2011 20:41:52 +0000 (UTC)
From: "Konstantin Boudnik (Commented) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-2573) TestFiDataXceiverServer is failing,
 not testing OOME
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    [ https://issues.apache.org/jira/browse/HDFS-2573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153867#comment-13153867 ] 

Konstantin Boudnik commented on HDFS-2573:
------------------------------------------

I think there's a couple of approaches here:
 - overwrite {{datanode.threadGroup#uncaughtException}} method
 - inject a bit more code {{DataXceiver}} so a listener can be registered and notified when OOME is thrown in {{run()}}.

Both are doable, the latter is a way simpler.
                
> TestFiDataXceiverServer is failing, not testing OOME
> ----------------------------------------------------
>
>                 Key: HDFS-2573
>                 URL: https://issues.apache.org/jira/browse/HDFS-2573
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, test
>    Affects Versions: 0.22.0
>            Reporter: Konstantin Shvachko
>             Fix For: 0.22.0
>
>
> TestFiDataXceiverServer is failing occasionally. It turns out also that the test is not testing the desired condition, because OOME is not caught in DataXceiverServer.run()

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