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https://issues.apache.org/jira/browse/CASSANDRA-15338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940769#comment-16940769
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Benedict Elliott Smith commented on CASSANDRA-15338:
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cc [~ifesdjeen]
> Fix flakey testMessagePurging - org.apache.cassandra.net.ConnectionTest
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-15338
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15338
> Project: Cassandra
> Issue Type: Bug
> Components: Test/unit
> Reporter: David Capwell
> Priority: Normal
>
> Example failure:
> [https://circleci.com/gh/dcapwell/cassandra/11#artifacts/containers/1]
>
> {code:java}
> Testcase: testMessagePurging(org.apache.cassandra.net.ConnectionTest): FAILED
> expected:<0> but was:<1>
> junit.framework.AssertionFailedError: expected:<0> but was:<1>
> at
> org.apache.cassandra.net.ConnectionTest.lambda$testMessagePurging$38(ConnectionTest.java:625)
> at
> org.apache.cassandra.net.ConnectionTest.doTestManual(ConnectionTest.java:258)
> at
> org.apache.cassandra.net.ConnectionTest.testManual(ConnectionTest.java:231)
> at
> org.apache.cassandra.net.ConnectionTest.testMessagePurging(ConnectionTest.java:584){code}
>
> Looking closer at
> org.apache.cassandra.net.OutboundConnection.Delivery#stopAndRun it seems that
> the run method is called before
> org.apache.cassandra.net.OutboundConnection.Delivery#doRun which may lead to
> a test race condition where the CountDownLatch completes before executing
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