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https://issues.apache.org/jira/browse/IMPALA-12500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17798595#comment-17798595
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ASF subversion and git services commented on IMPALA-12500:
----------------------------------------------------------
Commit 4391595f02d02ac9169bc0fd18a049e4a35eafe3 in impala's branch
refs/heads/master from Csaba Ringhofer
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=4391595f0 ]
IMPALA-12500: Reduce flakyness of test_global_exchange_counters
Ran the tests repeatedly and the failures I saw were only 0.01 off.
Ignoring the last digit of ExchangeScanRatio seems to be enough
to make the test consistently green.
Change-Id: I530b690128d4c55a793440425dd39c6523741bf7
Reviewed-on: http://gerrit.cloudera.org:8080/20811
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> TestObservability.test_global_exchange_counters is flaky
> --------------------------------------------------------
>
> Key: IMPALA-12500
> URL: https://issues.apache.org/jira/browse/IMPALA-12500
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.4.0
> Reporter: Joe McDonnell
> Assignee: Csaba Ringhofer
> Priority: Critical
> Labels: broken-build, flaky
>
> There have been intermittent failures on this test with the following symptom:
> {noformat}
> query_test/test_observability.py:564: in test_global_exchange_counters
> assert "ExchangeScanRatio: 4.63" in profile
> E assert 'ExchangeScanRatio: 4.63' in 'Query
> (id=c04b974db37e7046:b5fe4dea00000000):\n DEBUG MODE WARNING: Query profile
> created while running a DEBUG buil...: 0.000ns\n - WriteIoBytes:
> 0\n - WriteIoOps: 0 (0)\n - WriteIoWaitTime:
> 0.000ns\n'
> -- executing against localhost:21000
> select count(*), sleep(50) from tpch_parquet.orders o
> inner join tpch_parquet.lineitem l on o.o_orderkey = l.l_orderkey
> group by o.o_clerk limit 10;
> -- 2023-10-05 19:47:29,817 INFO MainThread: Started query
> c04b974db37e7046:b5fe4dea00000000{noformat}
>
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