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https://issues.apache.org/jira/browse/CASSANDRA-19376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17903467#comment-17903467
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Ekaterina Dimitrova commented on CASSANDRA-19376:
-------------------------------------------------
Also seen here:
https://app.circleci.com/pipelines/github/ekaterinadimitrova2/cassandra/2737/workflows/0e7ea6ab-643e-4d73-b3a7-6a7ac0d27c63/jobs/61970/tests
> CompactionStrategyManagerTest.testAutomaticUpgradeConcurrency is flaky
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-19376
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19376
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Test/unit
> Reporter: Andres de la Peña
> Priority: Normal
> Fix For: 5.x
>
>
> The unit test
> {{CompactionStrategyManagerTest.testAutomaticUpgradeConcurrency}} fails
> occasionally at least in {{trunk}}:
> {code}
> unit.framework.AssertionFailedError: expected:<1> but was:<0>
> at
> org.apache.cassandra.db.compaction.CompactionStrategyManagerTest.testAutomaticUpgradeConcurrency(CompactionStrategyManagerTest.java:227)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> {code}
> https://app.circleci.com/pipelines/github/adelapena/cassandra/3427/workflows/126307ce-d465-4736-a71e-82e0b8749598
> The failure can be reproduced with:
> {code}
> .circleci/generate.sh -p \
> -e
> REPEATED_UTESTS=org.apache.cassandra.db.compaction.CompactionStrategyManagerTest
> \
> -e REPEATED_UTESTS_COUNT=1000
> {code}
> I have only tested trunk. I haven't seen it on Butler.
> Observed flakiness is ~0.2% for all jobs except for tries, which ramps up to
> ~2.5%.
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