Jens Preußner created CASSANDRA-8357:
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             Summary: ArrayOutOfBounds in cassandra-stress with inverted 
exponential distribution
                 Key: CASSANDRA-8357
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8357
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
         Environment: 6-node cassandra cluster (2.1.1) on debian.
            Reporter: Jens Preußner
             Fix For: 2.1.1


When using the CQLstress example from GitHub 
(https://github.com/apache/cassandra/blob/trunk/tools/cqlstress-example.yaml) 
with an inverted exponential distribution in the insert-partitions field, 
generated threads fail with
Exception in thread "Thread-20" java.lang.ArrayIndexOutOfBoundsException: 20 at 
org.apache.cassandra.stress.StressAction$Consumer.run(StressAction.java:307)

See the gist https://gist.github.com/jenzopr/9edde53122554729c852 for the 
typetest.yaml I used.
The call was:
cassandra-stress user profile=typetest.yaml ops\(insert=1\) -node $NODES



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