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https://issues.apache.org/jira/browse/CASSANDRA-18065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17758681#comment-17758681
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Brandon Williams commented on CASSANDRA-18065:
----------------------------------------------
This fails on its initial commit from CASSANDRA-17821,
[here|https://app.circleci.com/pipelines/github/driftx/cassandra/1236/workflows/44d9e1b6-ec35-4a49-b8cd-6ce440212c23/jobs/47758]:
{noformat}
[junit-timeout] Testcase:
testStartAndStopScheduledSampling(org.apache.cassandra.tools.TopPartitionsTest):
FAILED
[junit-timeout] Scheduled sampled tasks should be removed expected:<[]> but
was:<[*.*]>
[junit-timeout] junit.framework.AssertionFailedError: Scheduled sampled tasks
should be removed expected:<[]> but was:<[*.*]>
[junit-timeout] at
org.apache.cassandra.tools.TopPartitionsTest.testStartAndStopScheduledSampling(TopPartitionsTest.java:116)
[junit-timeout] at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit-timeout] at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[junit-timeout] at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
{noformat}
/cc [~jmckenzie]
> Flaky test
> org.apache.cassandra.tools.TopPartitionsTest#testStartAndStopScheduledSampling
> -----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-18065
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18065
> Project: Cassandra
> Issue Type: Bug
> Components: Tool/nodetool
> Reporter: Andres de la Peña
> Assignee: Brandon Williams
> Priority: Normal
> Fix For: 5.0.x, 5.x
>
>
> The test
> {{org.apache.cassandra.tools.TopPartitionsTest#testStartAndStopScheduledSampling}}
> is fails intermittently on trunk with CircleCI:
> *
> https://app.circleci.com/pipelines/github/adelapena/cassandra/2508/workflows/92f054d7-9386-498f-9ba4-330181cd4782/jobs/24692
> *
> https://app.circleci.com/pipelines/github/adelapena/cassandra/2511/workflows/7aba8baa-0a6d-404a-b08b-c6a8078caca3/jobs/24706/tests
> The failure looks like:
> {code}
> junit.framework.AssertionFailedError: Scheduled sampled tasks should be
> removed expected:<[]> but was:<[*.*]>
> at
> org.apache.cassandra.tools.TopPartitionsTest.testStartAndStopScheduledSampling(TopPartitionsTest.java:116)
> {code}
> I haven't seen this failure on Butler/Jenkins yet, but it can be reproduced
> with the CircleCI multiplexer:
> {code}
> .circleci/generate.sh -m \
> -e REPEATED_UTESTS_COUNT=2000 \
> -e REPEATED_UTESTS=org.apache.cassandra.tools.TopPartitionsTest
> {code}
> It seems to fail 11 times on 2000 runs.
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