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https://issues.apache.org/jira/browse/CASSANDRA-12283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15407705#comment-15407705
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Benjamin Lerer commented on CASSANDRA-12283:
--------------------------------------------
I could not reproduce the problem on my machine.
While looking at the code I discovered 2 potential issues in
{{Util.spinAssertEquals}}.
# In {{3.0}} and {{2.2}} the loop will not run for the correct amount of time:
https://github.com/apache/cassandra/blob/cassandra-3.0/test/unit/org/apache/cassandra/Util.java#L525
# the use of {{Thread.yield()}} is surprising to me as the amount of time it
will take is unpredictable.
My current suggestion is to fix {{Util.spinAssertEquals}} by fixing the loop
and removing the {{Thread.yield()}} call and see if it solves the problem.
[~JoshuaMcKenzie] What do you think?
> CommitLogSegmentManagerTest.testCompressedCommitLogBackpressure is flaky
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-12283
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12283
> Project: Cassandra
> Issue Type: Test
> Reporter: Joshua McKenzie
> Assignee: Benjamin Lerer
> Priority: Minor
> Labels: unittest
>
> Failed 3 of the last 38 runs.
> [Failure|http://cassci.datastax.com/job/cassandra-3.9_testall/lastCompletedBuild/testReport/org.apache.cassandra.db.commitlog/CommitLogSegmentManagerTest/testCompressedCommitLogBackpressure/]
> Details:
> Error Message
> Timeout occurred. Please note the time in the report does not reflect the
> time until the timeout.
> Stacktrace
> junit.framework.AssertionFailedError: Timeout occurred. Please note the time
> in the report does not reflect the time until the timeout.
> at java.lang.Thread.run(Thread.java:745)
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