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https://issues.apache.org/jira/browse/APEXCORE-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15132769#comment-15132769
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Chris Nauroth commented on APEXCORE-330:
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If this refers to code executing in a YARN container, then you might be
interested in looking at YARN-445. It's a long-standing issue to add a feature
for signaling containers. If you have it as a feature in YARN, then you might
not need to roll your own code to get a thread dump in Apex.
YARN-445 is an umbrella JIRA with multiple sub-tasks. I've lost track of
overall project status, but it appears that at least some portions of this are
shipping in the upcoming Apache Hadoop 2.8.0. For example, see sub-task
YARN-1897.
> Ability to obtain a thread dump from a container
> ------------------------------------------------
>
> Key: APEXCORE-330
> URL: https://issues.apache.org/jira/browse/APEXCORE-330
> Project: Apache Apex Core
> Issue Type: Improvement
> Reporter: Thomas Weise
>
> To analyze issues such as "stuck operator", it is useful to obtain stats from
> the running JVM. Often needed are GC stats and thread dump. In production
> environments users often don't have direct access to the machines, making it
> available through the REST API will help.
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