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From "Andrey Klochkov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently
Date Wed, 11 Sep 2013 22:59:53 GMT
Andrey Klochkov created YARN-1183:
-------------------------------------

             Summary: MiniYARNCluster shutdown takes several minutes intermittently
                 Key: YARN-1183
                 URL: https://issues.apache.org/jira/browse/YARN-1183
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Andrey Klochkov


As described in MAPREDUCE-5501 sometimes M/R tests leave MRAppMaster java processes living
for several minutes after successful completion of the corresponding test. There is a concurrency
issue in MiniYARNCluster shutdown logic which leads to this. Sometimes RM stops before an
app master sends it's last report, and then the app master keeps retrying for >6 minutes.
In some cases it leads to failures in subsequent tests, and it affects performance of tests
as app masters eat resources.

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