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https://issues.apache.org/jira/browse/MAPREDUCE-4252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13274552#comment-13274552
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Robert Joseph Evans commented on MAPREDUCE-4252:
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The patch looks good to me. I have read through the code and looked at the
state transition graphs and I don't see any issues with it. +1
On a side note I would like to get this into branch-0.23 as well, patch applies
with no problems there.
> MR2 job never completes with 1 pending task
> -------------------------------------------
>
> Key: MAPREDUCE-4252
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4252
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.1
> Reporter: Tom White
> Assignee: Tom White
> Attachments: MAPREDUCE-4252.patch, MAPREDUCE-4252.patch, MapReduce.png
>
>
> This was found by ATM:
> bq. I ran a teragen with 1000 map tasks. Many task attempts failed, but after
> 999 of the tasks had completed, the job is now sitting forever with 1 task
> "pending".
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