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MapReduce, mail # dev - killApplication doesn't kill AppMaster


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Bo Wang 2012-08-22, 23:01
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Arun C Murthy 2012-08-22, 23:22
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Bo Wang 2012-08-23, 00:20
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Re: killApplication doesn't kill AppMaster
Vinod Kumar Vavilapalli 2012-08-23, 02:29

> I am not sure when to grab the stack trace of the AM. In the stdout/stderr
> of AM, no stack trace (or exception) is emitted.
You can login to the node and if the process is still alive, you can do a "kill -3" which will dump the threads' status to stderr.
> Btw, I am curious how NM kills a container. Does it directly kill the JVM
> process?
NM directly kills the JVM with a SIGTERM followed by a SIGKILL.

BTW, please also check the corresponding NM's logs if there is some exception/error which could mean a bug in NM code.

HTH,
+Vinod
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Bo Wang 2012-08-29, 22:28
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Vinod Kumar Vavilapalli 2012-08-30, 00:23
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Bo Wang 2012-08-30, 20:43
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Bo Wang 2012-09-01, 00:12