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From "Chris Westin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2847) DrillBuf's overridden retain()/release() mechanics appear to be broken
Date Wed, 22 Apr 2015 19:11:58 GMT
Chris Westin created DRILL-2847:
-----------------------------------

             Summary: DrillBuf's overridden retain()/release() mechanics appear to be broken
                 Key: DRILL-2847
                 URL: https://issues.apache.org/jira/browse/DRILL-2847
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow, Execution - RPC
    Affects Versions: 0.9.0
            Reporter: Chris Westin
            Assignee: Jacques Nadeau
             Fix For: 1.0.0


I've created a patch that demonstrates this. In the patch, code is added to UnsafeDirectLittleEndian
to track all the instances of that class that are created (which happens when buffers are
allocated inside TopLevelAllocator). release() is overridden to remove these from the tracked
list when they are released. An @After action is added to TestTpchDistributed which checks
on the count of outstanding buffers. If the test is run, every case fails, and each failure
shows a progressively larger and larger number of outstanding buffers. There are no complaints
from the allocator.



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