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https://issues.apache.org/jira/browse/HADOOP-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12476420
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Hadoop QA commented on HADOOP-1042:
-----------------------------------
+1, because
http://issues.apache.org/jira/secure/attachment/12352150/1042.new.patch applied
and successfully tested against trunk revision
http://svn.apache.org/repos/asf/lucene/hadoop/trunk/512006. Results are at
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch
> 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
> 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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