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Date: Mon, 2 Apr 2012 20:47:25 +0000 (UTC)
From: "Hudson (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (MAPREDUCE-4089) Hung Tasks never time out.
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-4089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244593#comment-13244593 ] 

Hudson commented on MAPREDUCE-4089:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #1985 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1985/])
    MAPREDUCE-4089. Hung Tasks never time out. (Robert Evans via tgraves) (Revision 1308531)

     Result = SUCCESS
tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1308531
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapred/TaskAttemptListenerImpl.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/TaskHeartbeatHandler.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestTaskHeartbeatHandler.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml

                
> Hung Tasks never time out. 
> ---------------------------
>
>                 Key: MAPREDUCE-4089
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4089
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.2, 2.0.0, trunk
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Blocker
>             Fix For: 0.23.3
>
>         Attachments: MR-4089.txt, MR-4089.txt, MR-4089.txt, MR-4089.txt, MR-4089.txt
>
>
> The AM will timeout a task through mapreduce.task.timeout only when it does not hear from the task within the given timeframe.  On 1.0 a task must be making progress, either by reading input from HDFS, writing output to HDFS, writing to a log, or calling a special method to inform it that it is still making progress.
> This is because on 0.23 a status update which happens every 3 seconds is counted as progress.

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