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Posted to issues@impala.apache.org by "Tim Wood (JIRA)" <ji...@apache.org> on 2017/09/26 19:59:00 UTC

[jira] [Created] (IMPALA-5986) Impala test suite harness fails to reset some options in SQL sessions

Tim Wood created IMPALA-5986:
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             Summary: Impala test suite harness fails to reset some options in SQL sessions
                 Key: IMPALA-5986
                 URL: https://issues.apache.org/jira/browse/IMPALA-5986
             Project: IMPALA
          Issue Type: Bug
          Components: Infrastructure
    Affects Versions: Impala 2.10.0
            Reporter: Tim Wood
            Assignee: Tim Wood


This bug relates to IMPALA-5956 and IMPALA-5376, found while characterizing TPC-DS tests that flap.

Runs of the full TPC-DS suite display results for various tests that variously fail or succeed in absence of code or environment changes.  All failures are connected with displays of the scale of decimal values.  Some tests contain SET DECIMAL_V2=1; statements. I theorized that this option was getting left on in SQL connections and exposed to subsequent tests.

The main test suite driver file, $IMPALA_HOME/tests/common/impala_test_suite.py, contains logic to reset options in the SQL session between tests, however its regex to detect these statements fails for statements that contain digits (SET_PATTERN = re.compile(...)).




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