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https://issues.apache.org/jira/browse/MAPREDUCE-5465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369984#comment-14369984
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Ray Chiang commented on MAPREDUCE-5465:
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I'm still catching up on this JIRA for reviewing, but I do have some questions.
1) I see that SUCCESS_CONTAINER_CLEANUP still exists as a state, but I'm not
seeing any transitions to that state. Is it still needed? Or is it a hidden
transition now?
2) I see the instantiation of the ExitFinishingOnTimeoutTransition class, but
I'm not seeing it used anywhere. Along similar lines, I'm not seeing any exit
transitions from the SUCCESS_FINISHING_CONTAINER and FAIL_FINISHING_CONTAINER
classes. I'm also not sure if that is deliberate or not.
> Container killed before hprof dumps profile.out
> -----------------------------------------------
>
> Key: MAPREDUCE-5465
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5465
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am, mrv2
> Reporter: Radim Kolar
> Assignee: Ming Ma
> Attachments: MAPREDUCE-5465-2.patch, MAPREDUCE-5465-3.patch,
> MAPREDUCE-5465-4.patch, MAPREDUCE-5465-5.patch, MAPREDUCE-5465-6.patch,
> MAPREDUCE-5465-7.patch, MAPREDUCE-5465-8.patch, MAPREDUCE-5465.patch
>
>
> If there is profiling enabled for mapper or reducer then hprof dumps
> profile.out at process exit. It is dumped after task signaled to AM that work
> is finished.
> AM kills container with finished work without waiting for hprof to finish
> dumps. If hprof is dumping larger outputs (such as with depth=4 while depth=3
> works) , it could not finish dump in time before being killed making entire
> dump unusable because cpu and heap stats are missing.
> There needs to be better delay before container is killed if profiling is
> enabled.
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