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https://issues.apache.org/jira/browse/IMPALA-9755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17112480#comment-17112480
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ASF subversion and git services commented on IMPALA-9755:
---------------------------------------------------------
Commit 95ee26354dc0ce61e5844430d1eaf553fd13d154 in impala's branch
refs/heads/master from Sahil Takiar
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=95ee263 ]
IMPALA-9755: Flaky test: test_global_exchange_counters
De-flake TestObservability.test_global_exchange_counters in
test_observability.py.
IMPALA-6984 added a feature to send a Cancel RPC to running fragments
when the coordinator fragment fetches all rows defined by a limit. This
causes fragments to terminate early (which is a good thing). However,
test_global_exchange_counters expects each fragment to produce some
rows, which is why it recently became flaky.
This patch modifies test_global_exchange_counters so that it allows for
some fragments to produce 0 rows.
Testing:
* Ran test_observability.py locally
* Looped 8 concurrent streams of test_global_exchange_counters for an
hour, no failures (previously I was able to reproduce the test issue
within 5 minutes)
Change-Id: Icb3a1b5ccb5695eb71343e96cc830f12d5c72f1e
Reviewed-on: http://gerrit.cloudera.org:8080/15960
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Flaky test: test_global_exchange_counters
> -----------------------------------------
>
> Key: IMPALA-9755
> URL: https://issues.apache.org/jira/browse/IMPALA-9755
> Project: IMPALA
> Issue Type: Bug
> Components: Infrastructure
> Reporter: Tim Armstrong
> Assignee: Sahil Takiar
> Priority: Blocker
> Labels: flaky
>
> {noformat}
> query_test.test_observability.TestObservability.test_global_exchange_counters
> (from pytest)
> Failing for the past 1 build (Since Failed#10637 )
> Took 22 sec.
> add description
> Error Message
> query_test/test_observability.py:504: in test_global_exchange_counters
> assert m, "Cannot match pattern for key %s in line '%s'" % (key, line) E
> AssertionError: Cannot match pattern for key TotalBytesSent in line '
> - TotalBytesSent: 0' E assert None
> Stacktrace
> query_test/test_observability.py:504: in test_global_exchange_counters
> assert m, "Cannot match pattern for key %s in line '%s'" % (key, line)
> E AssertionError: Cannot match pattern for key TotalBytesSent in line '
> - TotalBytesSent: 0'
> E assert None
> {noformat}
> https://jenkins.impala.io/job/ubuntu-16.04-from-scratch/10637/testReport/junit/query_test.test_observability/TestObservability/test_global_exchange_counters/
> Filing in case it reoccurs.
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