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https://issues.apache.org/jira/browse/HADOOP-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doug Cutting updated HADOOP-1042:
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Resolution: Fixed
Fix Version/s: 0.12.0
Status: Resolved (was: Patch Available)
I committed this yesterday. Thanks, Devaraj!
> Improve the handling of failed map output fetches
> -------------------------------------------------
>
> Key: HADOOP-1042
> URL: https://issues.apache.org/jira/browse/HADOOP-1042
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.11.2
> Reporter: Devaraj Das
> Assigned To: Devaraj Das
> Fix For: 0.12.0
>
> Attachments: 1042.new.patch, 1042.patch
>
>
> Currently, whenever fetch of a map output fails the corresponding
> MapOutputLocation is added to a List datastructure for later retrial. But, if
> the failure was due to a lost task, the entry that was added is not deleted.
> For such cases, unnecessary retrials will happen. This situation should be
> prevented.
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