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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-13216) testall failure in org.apache.cassandra.net.MessagingServiceTest.testDroppedMessages
Date Wed, 29 Mar 2017 11:44:42 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-13216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15946966#comment-15946966
] 

Alex Petrov commented on CASSANDRA-13216:
-----------------------------------------

This is extremely weird. I've ran the test 100 times [here|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13216-trunk-testall/lastCompletedBuild/consoleFull]
and it passed every time. Checked for the interference (by ensuring that each test class is
running in it's own forked JVM), and confirmed it (by outputting and comparing PIDs of the
processes in the log files). I've checked for possible races / reordering and could not find
any problem so far. Looks like we can only reproduce this issue when running a full test suite,
not an individual test.

> testall failure in org.apache.cassandra.net.MessagingServiceTest.testDroppedMessages
> ------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-13216
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13216
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Testing
>            Reporter: Sean McCarthy
>              Labels: test-failure, testall
>             Fix For: 3.0.13, 3.11.0, 4.0
>
>         Attachments: TEST-org.apache.cassandra.net.MessagingServiceTest.log, TEST-org.apache.cassandra.net.MessagingServiceTest.log
>
>
> example failure:
> http://cassci.datastax.com/job/cassandra-3.11_testall/81/testReport/org.apache.cassandra.net/MessagingServiceTest/testDroppedMessages
> {code}
> Error Message
> expected:<... dropped latency: 27[30 ms and Mean cross-node dropped latency: 2731]
ms> but was:<... dropped latency: 27[28 ms and Mean cross-node dropped latency: 2730]
ms>
> {code}{code}
> Stacktrace
> junit.framework.AssertionFailedError: expected:<... dropped latency: 27[30 ms and
Mean cross-node dropped latency: 2731] ms> but was:<... dropped latency: 27[28 ms and
Mean cross-node dropped latency: 2730] ms>
> 	at org.apache.cassandra.net.MessagingServiceTest.testDroppedMessages(MessagingServiceTest.java:83)
> {code}



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