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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