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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2940) Large allocations are not released until GC kicks in
Date Sat, 02 May 2015 17:19:06 GMT
Jacques Nadeau created DRILL-2940:
-------------------------------------

             Summary: Large allocations are not released until GC kicks in
                 Key: DRILL-2940
                 URL: https://issues.apache.org/jira/browse/DRILL-2940
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
            Reporter: Jacques Nadeau
            Assignee: Jacques Nadeau


If you allocate over the chunk size (16mb), we are currently relying on GC to release those
buffers. This is problematic since direct memory pressure doesn't cause gc.  In some situations
with fast memory turnover, this means we run out of memory incorrectly.



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