[IMPALA-10441] query_test.test_scanners.TestParquet.test_bytes_read_per_column fails on S3 and EC builds

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: Impala 4.0.0
• Labels: broken-build
• Epic Color: ghx-label-4
• Assignee: Laszlo Gaal
• Reporter: Laszlo Gaal
• Created: 16/Jan/21 20:46
• Updated: 21/Jan/21 14:17
• Resolved: 21/Jan/21 14:17

Description

The test fails for all debug actions exercised in the test set.
Error backtrace is:

query_test/test_scanners.py:1006: in test_bytes_read_per_column
    assert len(compressed_bytes_read_per_col_summaries) == 4
E   assert 2 == 4
E    +  where 2 = len([TSummaryStatsCounter(total_num_values=0, name=None, max_value=0, sum=0, min_value=0, unit=None), TSummaryStatsCounter(total_num_values=0, name=None, max_value=0, sum=0, min_value=0, unit=None)])

The symptom on builds testing HDFS erasure-coding is slightly different (the mismatching number is different):

query_test/test_scanners.py:1006: in test_bytes_read_per_column
    assert len(compressed_bytes_read_per_col_summaries) == 4
E   assert 3 == 4
E    +  where 3 = len([TSummaryStatsCounter(total_num_values=0, name=None, max_value=0, sum=0, min_value=0, unit=None), TSummaryStatsCounter...n_value=0, unit=None), TSummaryStatsCounter(total_num_values=0, name=None, max_value=0, sum=0, min_value=0, unit=None)])