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https://issues.apache.org/jira/browse/MAPREDUCE-3643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182616#comment-13182616
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Robert Joseph Evans commented on MAPREDUCE-3643:
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Is there any more information you can give on this? How reproducible is it?
It sounds like it is kind of sporadic. So the reducer is the identity reducer,
what about the mapper. Do you any logs that you can upload. The JT log for
the time of the error would be very helpful.
> Reducer Job always goes to pending state.
> -----------------------------------------
>
> Key: MAPREDUCE-3643
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3643
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Arun Prakash
> Priority: Minor
>
> I am using hadoop streaming command for map-reduce.In my job there are 4
> streaming commands,i have no issues with first 3 steps but step4 job once
> mapper got 100% completed directly going to pending state,even there was no
> error in the job tracker.
> In the step4,i am merging the output(i.e step2 and step 3 output) as single
> output using identity reducer.
> I have ran this job several times there was no issues but i am facing the
> problem right now.
> Any suggestions!
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