[ http://issues.apache.org/jira/browse/HADOOP-813?page=all ]
Owen O'Malley updated HADOOP-813:
---------------------------------
Status: Open (was: Patch Available)
> map tasks lost during sort
> --------------------------
>
> Key: HADOOP-813
> URL: http://issues.apache.org/jira/browse/HADOOP-813
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.10.0
> Reporter: Owen O'Malley
> Assigned To: Devaraj Das
> Fix For: 0.10.0
>
> Attachments: 813.patch
>
>
> On a 500 node cluster, I had a bunch of map tasks get "lost" because they
> failed to report progress for 10 minutes. They appear to be in the sort stage
> at the end of the map. I hypothesize that the patch for HADOOP-331 does not
> update the map's progress during the sort/merge. If the sort/merge takes more
> than 10 minutes, the task is lost.
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