[jira] [Created] (IMPALA-9094) Update test_hms_integration.py test_compute_stats_get_to_hive to account for separate Hive/Impala statistics

["Joe McDonnell (Jira)" <ji...@apache.org>]

Joe McDonnell created IMPALA-9094:
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             Summary: Update test_hms_integration.py test_compute_stats_get_to_hive to account for separate Hive/Impala statistics
                 Key: IMPALA-9094
                 URL: https://issues.apache.org/jira/browse/IMPALA-9094
             Project: IMPALA
          Issue Type: Bug
          Components: Frontend
    Affects Versions: Impala 3.4.0
            Reporter: Joe McDonnell


With newer Hive versions, Impala and Hive stats are kept separately and won't overwrite each other. test_hms_integration.py test_compute_stats_get_to_hive expects that Hive stats change when Impala does compute stats. test_compute_stats_get_to_impala expects that Impala stats change when Hive does compute stats. These tests need to be revised. Here are the example test failures:
{noformat}
metadata/test_hms_integration.py:486: in test_compute_stats_get_to_hive
    assert hive_stats != self.hive_column_stats(table_name, 'x')
E   assert {'# col_name': 'data_type', 'col_name': 'data_type', 'x': 'int'} != {'# col_name': 'data_type', 'col_name': 'data_type', 'x': 'int'}
E    +  where {'# col_name': 'data_type', 'col_name': 'data_type', 'x': 'int'} = <bound method TestHmsIntegration.hive_column_stats of <test_hms_integration.TestHmsIntegration object at 0xe260e50>>('zbberubbydyldirc.fkqzvzekyqsjnflk', 'x')
E    +    where <bound method TestHmsIntegration.hive_column_stats of <test_hms_integration.TestHmsIntegration object at 0xe260e50>> = <test_hms_integration.TestHmsIntegration object at 0xe260e50>.hive_column_stats{noformat}
If my theory is right, we should flip the test to make sure that Impala compute stats doesn't impact Hive and vice versa.



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