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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3528) The task timeout check interval should be configurable independent of mapreduce.task.timeout
Date Mon, 09 Jan 2012 22:51:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182896#comment-13182896
] 

Hudson commented on MAPREDUCE-3528:
-----------------------------------

Integrated in Hadoop-Common-0.23-Commit #356 (See [https://builds.apache.org/job/Hadoop-Common-0.23-Commit/356/])
    MAPREDUCE-3528. Fixed TaskHeartBeatHandler to use a new configuration for the thread loop
interval separate from task-timeout configuration property. Contributed by Siddharth Seth.
svn merge --ignore-ancestry -c 1229403 ../../trunk/

vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1229405
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/TaskHeartbeatHandler.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java

                
> The task timeout check interval should be configurable independent of mapreduce.task.timeout
> --------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3528
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3528
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>             Fix For: 0.23.1
>
>         Attachments: MR3528.txt
>
>
> TaskHeartbeatHandler sleeps for 'mapreduce.task.timeout' - between each check. If a task/NM
goes bad immediately after starting a task - the timeout is detected in ~2x the configured
timeout interval.

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