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https://issues.apache.org/jira/browse/MAPREDUCE-3006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106887#comment-13106887
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Karam Singh commented on MAPREDUCE-3006:
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Today did fresh checkout of branch 0.23
Applied Patch provided by Vinod
Compiled yarn and deployed
Ran the Sleep Job 100K tasks, when job got completed, successfully accessed job
from HistroyServer, whereas without job history did not get completed
> MapReduce AM exits prematurely before completely writing and closing the
> JobHistory file
> ----------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3006
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3006
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster, mrv2
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-3006-20110915.txt, MAPREDUCE-3006-20110916.txt
>
>
> [~Karams] was executing a sleep job with 100,000 tasks on a 350 node cluster
> to test MR AM's scalability and ran into this. The job ran successfully but
> the history was not available.
> I debugged around and figured that the job is finishing prematurely before
> the JobHistory is written. In most of the cases, we don't see this bug as we
> have a 5 seconds sleep in AM towards the end.
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