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https://issues.apache.org/jira/browse/MAPREDUCE-5044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Payne updated MAPREDUCE-5044:
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Attachment: MAPREDUCE-5044.v07.local.patch
Thanks, [~jira.shegalov] for all of the work already done on this JIRA.
I have upmerged the latest patch and integrated it with the
{{SignalContainerRequest}} that was added as part of YARN-445 and its children.
[~mingma], [~xgong], [~jlowe], [~jira.shegalov], would you please take a look?
I would like to see functionality in this JIRA implemented. We occasionally see
containers time out, and it would be good if users could have direct feedback
in the form of a jstack to help them debug their applications.
IIUC, YARN-445 and its children put in place the infrastructure for a {{Client
-> RM -> NM -> Container}} signal path. However, in order to automatically dump
the jstack when a container times out, we still need an {{AM -> NM ->
Container}} signal path. This JIRA (MAPREDUCE-5044 along with YARN-1515) adds
this signal path along with the ability to send multiple signals per call.
I think sending multiple signals per call could be split into a separate JIRA.
> Have AM trigger jstack on task attempts that timeout before killing them
> ------------------------------------------------------------------------
>
> Key: MAPREDUCE-5044
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5044
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am
> Affects Versions: 2.1.0-beta
> Reporter: Jason Lowe
> Assignee: Gera Shegalov
> Attachments: MAPREDUCE-5044.v01.patch, MAPREDUCE-5044.v02.patch,
> MAPREDUCE-5044.v03.patch, MAPREDUCE-5044.v04.patch, MAPREDUCE-5044.v05.patch,
> MAPREDUCE-5044.v06.patch, MAPREDUCE-5044.v07.local.patch, Screen Shot
> 2013-11-12 at 1.05.32 PM.png, Screen Shot 2013-11-12 at 1.06.04 PM.png
>
>
> When an AM expires a task attempt it would be nice if it triggered a jstack
> output via SIGQUIT before killing the task attempt. This would be invaluable
> for helping users debug their hung tasks, especially if they do not have
> shell access to the nodes.
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