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https://issues.apache.org/jira/browse/MAPREDUCE-1158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771068#action_12771068
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Hudson commented on MAPREDUCE-1158:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #100 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/100/])
. Fix JT running maps and running reduces metrics. Contributed by Sharad
Agarwal.
> running_maps is not decremented when the tasks of a job is killed/failed
> -------------------------------------------------------------------------
>
> Key: MAPREDUCE-1158
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1158
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.22.0
> Reporter: Ramya R
> Assignee: Sharad Agarwal
> Fix For: 0.22.0
>
> Attachments: 1158.patch, 1158_yahoo.patch
>
>
> running_maps counter in the metrics is not decremented when the tasks of a
> job is killed/failed. Below are the exact steps to reproduce the problem:
> * Initially running_maps=0
> * Submit a job with 5 maps. running_maps is set to 5
> * Kill 2 attempts of a map task
> * Fail 4 attempts of the same map task so that the job is finally marked
> killed.
> * Once the job is marked killed, running_maps is set to 3 and not 0.
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