[jira] [Commented] (CASSANDRA-9741) cfhistograms dtest flaps on trunk and 2.2

["Ariel Weisberg (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-9741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697419#comment-14697419 ] 

Ariel Weisberg commented on CASSANDRA-9741:
-------------------------------------------

We reduced this down again to 50 threads and it is more reliable but still fails occasionally.

> cfhistograms dtest flaps on trunk and 2.2
> -----------------------------------------
>
>                 Key: CASSANDRA-9741
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9741
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jim Witschey
>            Assignee: Ariel Weisberg
>             Fix For: 2.2.x, 3.0.x
>
>
> {{jmx_test.py:TestJMX.cfhistograms_test}} flaps on CassCI under trunk and 2.2.
> On 2.2, it fails one of its assertions when {{'Unable to compute when histogram overflowed'}} is found in the output of {{nodetool cfhistograms}}. Here's the failure history for 2.2:
> http://cassci.datastax.com/view/cassandra-2.2/job/cassandra-2.2_dtest/lastCompletedBuild/testReport/junit/jmx_test/TestJMX/cfhistograms_test/history/
> On trunk, it fails when an error about a {{WriteFailureException}} during hinted handoff is found in the C* logs after the tests run ([example cassci output|http://cassci.datastax.com/view/trunk/job/trunk_dtest/315/testReport/junit/jmx_test/TestJMX/cfhistograms_test/]). Here's the failure history for trunk:
> http://cassci.datastax.com/view/trunk/job/trunk_dtest/lastCompletedBuild/testReport/junit/jmx_test/TestJMX/cfhistograms_test/history/
> I haven't seen it fail locally yet, but haven't run the test more than a couple times because it takes a while.



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