[jira] [Created] (IMPALA-7145) Memory leak when looping test_spilling_naaj

["Tim Armstrong (JIRA)" <ji...@apache.org>]

Tim Armstrong created IMPALA-7145:
-------------------------------------

             Summary: Memory leak when looping test_spilling_naaj
                 Key: IMPALA-7145
                 URL: https://issues.apache.org/jira/browse/IMPALA-7145
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.13.0, Impala 3.1.0
            Reporter: Tim Armstrong
            Assignee: Tim Armstrong


I tried looping this test for a while to flush out a different issue and discovered a memory leak:
{noformat}
while impala-py.test tests/query_test/test_spilling.py -k naaj -n4 --verbose; do date; done
{noformat}

Eventually the test fails with "Memory Limit Exceeded" and there is a huge amount of untracked memory reported on /memz.

I tried running the heap growth profiler and the only suspicious thing I saw was CRYPTO_malloc, similar to IMPALA-6792. My current hypothesis is that it's something related to disk spill encryption and we haven't noticed it before because we had disk spill encryption off.

I'm looking the test with disk spill encryption disabled to see if the leak also occurs then.



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