[IMPALA-12062] TestUdfExecution.test_java_udfs fails intermittently

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Impala 4.3.0
• Component/s: fe
• Labels: flaky test-fail
• Epic Color: ghx-label-14
• Assignee: Peter Rozsa
• Reporter: Peter Rozsa
• Created: 14/Apr/23 13:09
• Updated: 13/Jul/23 06:34
• Resolved: 13/Jul/23 06:34

Description

TestUdfExecution.test_java_udfs fails intermittently in various cases, where the expected value is not NULL, but the execution returns NULL.

NULL handling changed in IMPALA-11911 and String/Binary handling changed in IMPALA-11854, these changes may be related.

Example error message:

query_test/test_udfs.py:344: in test_java_udfs     self.run_test_case('QueryTest/java-udf', vector, use_db=unique_database) common/impala_test_suite.py:749: in run_test_case     self.__verify_results_and_errors(vector, test_section, result, use_db) common/impala_test_suite.py:585: in __verify_results_and_errors     replace_filenames_with_placeholder) common/test_result_verifier.py:486: in verify_raw_results     VERIFIER_MAP[verifier](expected, actual) common/test_result_verifier.py:295: in verify_query_result_is_equal     assert expected_results == actual_results E   assert Comparing QueryTestResults (expected vs actual): E     '' != 'NULL' 

Statement:

select increment("");