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https://issues.apache.org/jira/browse/LUCENE-4510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13485494#comment-13485494
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Robert Muir commented on LUCENE-4510:
-------------------------------------

Actually getting to the step of printing the PID in the heartbeat message would 
be really useful!
                
> when a test's heart beats it should also throw up (dump stack of all threads)
> -----------------------------------------------------------------------------
>
>                 Key: LUCENE-4510
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4510
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Michael McCandless
>            Assignee: Dawid Weiss
>
> We've had numerous cases where tests were hung but the "operator" of that 
> particular Jenkins instance struggles to properly get a stack dump for all 
> threads and eg accidentally kills the process instead (rather awful that the 
> same powerful tool "kill" can be used to get stack traces and to destroy the 
> process...).
> Is there some way the test infra could do this for us, eg when it prints the 
> HEARTBEAT message?

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