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https://issues.apache.org/jira/browse/CASSANDRA-12744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021150#comment-16021150
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T Jake Luciani commented on CASSANDRA-12744:
--------------------------------------------

Thanks Ben, I'd appreciate it

Rebased on trunk:

[branch|https://github.com/tjake/cassandra/tree/stress-random-trunk]
[utest|http://cassci.datastax.com/job/tjake-stress-random-trunk-testall/]
[dtests| http://cassci.datastax.com/job/tjake-stress-random-trunk-dtest/]

> Randomness of stress distributions is not good
> ----------------------------------------------
>
>                 Key: CASSANDRA-12744
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12744
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>            Reporter: T Jake Luciani
>            Assignee: T Jake Luciani
>            Priority: Minor
>              Labels: stress
>             Fix For: 4.0
>
>
> The randomness of our distributions is pretty bad.  We are using the 
> JDKRandomGenerator() but in testing of uniform(1..3) we see for 100 
> iterations it's only outputting 3.  If you bump it to 10k it hits all 3 
> values. 
> I made a change to just use the default commons math random generator and now 
> see all 3 values for n=10



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