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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-446) Container killed before hprof dumps profile.out
Date Sun, 03 Mar 2013 15:27:12 GMT
Radim Kolar created YARN-446:
--------------------------------

             Summary: Container killed before hprof dumps profile.out
                 Key: YARN-446
                 URL: https://issues.apache.org/jira/browse/YARN-446
             Project: Hadoop YARN
          Issue Type: Bug
          Components: client
    Affects Versions: 2.0.3-alpha
            Reporter: Radim Kolar


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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