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From "Ahmed Radwan (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3418) If map output is not found, shuffle runs in tight loop
Date Wed, 08 Feb 2012 20:31:01 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13203948#comment-13203948
] 

Ahmed Radwan commented on MAPREDUCE-3418:
-----------------------------------------

Is there anyone looking at this issue?
                
> If map output is not found, shuffle runs in tight loop
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-3418
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3418
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.23.0
>            Reporter: John George
>
> Sharad Agarwal bumped into this while simulating fetch failures. 
> Removed the map output directory. Shuffle runs in tight loop throwing
> :
> 2011-06-01 09:02:20,511 WARN org.apache.hadoop.mapreduce.task.reduce.Fetcher: Invalid
map id 
> java.lang.IllegalArgumentException: TaskAttemptId string : TTP/1.1 500 Internal Server
Error
> Content-Type: text/plain; charset=UTF is not properly formed
>     at org.apache.hadoop.mapreduce.TaskAttemptID.forName(TaskAttemptID.java:174)
>     at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyMapOutput(Fetcher.java:284)
>     at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:251)
>     at org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:149)
> Fetch failure is not triggered.

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