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Posted to issues-all@impala.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2020/06/09 04:05:00 UTC
[jira] [Commented] (IMPALA-9830)
TestMtDopScanNode.test_mt_dop_scan_node fails BytesRead > 0 assert
[ https://issues.apache.org/jira/browse/IMPALA-9830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128836#comment-17128836 ]
ASF subversion and git services commented on IMPALA-9830:
---------------------------------------------------------
Commit dbd454445165829541c9e2c67cce5446bb535f46 in impala's branch refs/heads/master from Bikramjeet Vig
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=dbd4544 ]
IMPALA-9830: Fix flakiness in test_mt_dop_scan_node
This test has inherent flakiness due to it relying on instances
fetching scan ranges from a shared queue. The time sensitivity
enhanced the flakiness on a release build. So this change decreases
the mt_dop level to 8 which results in a failure rate of 0.05%.
This along with increasing the num of tries should make sure flakiness
is removed.
Change-Id: Ibc2f073096b9294205d2a18bd9cc44907b3f4da0
Reviewed-on: http://gerrit.cloudera.org:8080/16047
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>
> TestMtDopScanNode.test_mt_dop_scan_node fails BytesRead > 0 assert
> ------------------------------------------------------------------
>
> Key: IMPALA-9830
> URL: https://issues.apache.org/jira/browse/IMPALA-9830
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.0
> Reporter: Joe McDonnell
> Assignee: Bikramjeet Vig
> Priority: Blocker
> Labels: broken-build, flaky
>
> A few test runs have seen this failure in TestMtDopScanNode.test_mt_dop_scan_node():
> {noformat}
> query_test/test_mt_dop.py:134: in test_mt_dop_scan_node
> assert "- BytesRead: 0" not in result.runtime_profile, result.runtime_profile{noformat}
> This test is run in a loop due to IMPALA-9655. We may need to increase the number of loops or rethink the conditions of the test.
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