Igor Meltser created CASSANDRA-8411:
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             Summary: Cassandra stress tool fails with 
NotStrictlyPositiveException on example profiles
                 Key: CASSANDRA-8411
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8411
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
         Environment: Linux Centos
            Reporter: Igor Meltser
            Priority: Critical


Trying to run stress tool with provided profile fails:

dsc-cassandra-2.1.2/tools $ ./bin/cassandra-stress user n=1 
profile=cqlstress-example.yaml ops\(insert=1\) -node ....

INFO  06:21:35 Using data-center name 'datacenter1' for DCAwareRoundRobinPolicy 
(if this is incorrect, please provide the correct datacenter name with 
DCAwareRoundRobinPolicy constructor)
Connected to cluster: Benchmark Cluster
INFO  06:21:35 New Cassandra host /....:9042 added
Datatacenter: datacenter1; Host: /.....; Rack: rack1
Datatacenter: datacenter1; Host: /....; Rack: rack1
Datatacenter: datacenter1; Host: marcus14-p/....; Rack: rack1
INFO  06:21:35 New Cassandra host marcus14-p/....:9042 added
INFO  06:21:35 New Cassandra host /....:9042 added
Created schema. Sleeping 3s for propagation.
Exception in thread "main" 
org.apache.commons.math3.exception.NotStrictlyPositiveException: standard 
deviation (0)
        at 
org.apache.commons.math3.distribution.NormalDistribution.<init>(NormalDistribution.java:108)
        at 
org.apache.cassandra.stress.settings.OptionDistribution$GaussianFactory.get(OptionDistribution.java:418)
        at 
org.apache.cassandra.stress.generate.SeedManager.<init>(SeedManager.java:59)
        at 
org.apache.cassandra.stress.settings.SettingsCommandUser.getFactory(SettingsCommandUser.java:78)
        at org.apache.cassandra.stress.StressAction.run(StressAction.java:61)
        at org.apache.cassandra.stress.Stress.main(Stress.java:109)



The tool is 2.1.2 version, but the tested Cassandra is 2.0.8 version



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