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https://issues.apache.org/jira/browse/CASSANDRA-18065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17758445#comment-17758445
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Andres de la Peña commented on CASSANDRA-18065:
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I saw it on {{trunk}} at the time of opening the ticket (22/Nov/22).
I have just hit it on 5.0:
https://app.circleci.com/pipelines/github/adelapena/cassandra/3134/workflows/53f427a0-3303-40ee-810e-69141f35174d/jobs/71095/tests
> 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
> 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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