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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4252) MR2 job never completes with 1 pending task
Date Mon, 14 May 2012 11:05:01 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13274552#comment-13274552
] 

Robert Joseph Evans commented on MAPREDUCE-4252:
------------------------------------------------

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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