[
https://issues.apache.org/jira/browse/HADOOP-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12486268
]
Devaraj Das commented on HADOOP-1183:
-------------------------------------
I agree with Owen that the fetcher needs some redesigning on those lines. But
in any case, should anyone see reduce(s) hanging (with the fetcher continuously
trying to fetch output from a failed/lost map), this patch should be applied.
> MapTask completion not recorded properly at the Reducer's end
> -------------------------------------------------------------
>
> Key: HADOOP-1183
> URL: https://issues.apache.org/jira/browse/HADOOP-1183
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.12.2
> Reporter: Devaraj Das
> Assigned To: Devaraj Das
> Priority: Critical
> Fix For: 0.13.0
>
> Attachments: 1183.new.patch, 1183.new1.patch, 1183.patch
>
>
> A couple of reducers were continuously trying to fetch map outputs from a
> lost tasktracker. Although the tasks running on that lost TT successfully
> reexecuted elsewhere, the Reducers' tasktrackers didn't correctly note those
> events.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
