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https://issues.apache.org/jira/browse/CASSANDRA-1279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nirmal Ranganathan updated CASSANDRA-1279:
------------------------------------------

    Attachment: Cassandra-1279.patch

Fixed the problem, it's due to the unpredictable thread scheduling. The fixe 
loads the requests and then lets the scheduler proceed, that way the tests 
could be somewhat predictable and realize the expected behavior.

> heisenbug in RoundRobinSchedulerTest
> ------------------------------------
>
>                 Key: CASSANDRA-1279
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1279
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7
>            Reporter: Jonathan Ellis
>            Assignee: Nirmal Ranganathan
>             Fix For: 0.7
>
>         Attachments: Cassandra-1279.patch
>
>
> Occasionally I see this error in the test suite:
>     [junit] Testcase: 
> testScheduling(org.apache.cassandra.scheduler.RoundRobinSchedulerTest): FAILED
>     [junit] 
>     [junit] junit.framework.AssertionFailedError: 
>     [junit]   at 
> org.apache.cassandra.scheduler.RoundRobinSchedulerTest.testScheduling(RoundRobinSchedulerTest.java:90)
>     [junit] 

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