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https://issues.apache.org/jira/browse/IMPALA-12630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17796632#comment-17796632
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Csaba Ringhofer commented on IMPALA-12630:
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was curious and ran this locally:
My local env (with bit old dataload):
- NumOrcStripes: 12 (12)
- RowsRead: 13.50K (13501)
vs profiles uploaded:
- NumOrcStripes: 8 (8)
- RowsRead: 20.00K (20000)
I think that the recent commit Revert "IMPALA-9923: Load ORC serially to hack
around flakiness"
https://github.com/apache/impala/commit/b03e8ef95c856f499d17ea7815831e30e2e9f467
lead to this indeterminisim in dataload
[~rizaon]
> TestOrcStats.test_orc_stats fails in count-start on lineitem with filter
> ------------------------------------------------------------------------
>
> Key: IMPALA-12630
> URL: https://issues.apache.org/jira/browse/IMPALA-12630
> Project: IMPALA
> Issue Type: Bug
> Reporter: Quanlong Huang
> Priority: Critical
> Attachments: profile_1134.txt, profile_949.txt
>
>
> Saw the test failed several times recently:
> https://jenkins.impala.io/job/ubuntu-20.04-dockerised-tests/949
> https://jenkins.impala.io/job/ubuntu-20.04-from-scratch/1134
> {noformat}
> query_test/test_orc_stats.py:41: in test_orc_stats
> self.run_test_case('QueryTest/orc-stats', vector, use_db=unique_database)
> common/impala_test_suite.py:776: in run_test_case
> update_section=pytest.config.option.update_results)
> common/test_result_verifier.py:683: in verify_runtime_profile
> % (function, field, expected_value, actual_value, op, actual))
> E AssertionError: Aggregation of SUM over RowsRead did not match expected
> results.
> E EXPECTED VALUE:
> E 13501
> E
> E
> E ACTUAL VALUE:
> E 20000
> E
> E OP:
> E : {noformat}
> The query is
> {code:sql}
> select count(*) from tpch_orc_def.lineitem where l_orderkey = 1609411
> {code}
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