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Posted to issues@tez.apache.org by "Rajesh Balamohan (JIRA)" <ji...@apache.org> on 2014/09/15 10:21:34 UTC

[jira] [Created] (TEZ-1585) Memory leak in tez session mode

Rajesh Balamohan created TEZ-1585:
-------------------------------------

             Summary: Memory leak in tez session mode
                 Key: TEZ-1585
                 URL: https://issues.apache.org/jira/browse/TEZ-1585
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Rajesh Balamohan


DAGAppMaster's memory gradually keeps increasing when running simple tez apps repeatedly in session mode.  Taking memory snapshots revealed that FileSystem.CACHE is getting populated with some keys which are not being released.  

Around 200KB of data is leaked for every job invocation in the session mode.  I will attach the profiler snapshots soon.  Haven't figured out yet on who makes the call to FileSystem.get() and not calling close().



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