[jira] [Created] (CASSANDRA-13773) cassandra-stress writes even data when n=0

["Eduard Tudenhoefner (JIRA)" <ji...@apache.org>]

Eduard Tudenhoefner created CASSANDRA-13773:
-----------------------------------------------

             Summary: cassandra-stress writes even data when n=0
                 Key: CASSANDRA-13773
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13773
             Project: Cassandra
          Issue Type: Bug
          Components: Stress
            Reporter: Eduard Tudenhoefner
            Assignee: Eduard Tudenhoefner
            Priority: Minor
             Fix For: 3.0.15


This is very unintuitive as
{code}
cassandra-stress write n=0 -rate threads=1
{code}
will do inserts even with *n=0*. I guess most people won't ever run with *n=0* but this is a nice shortcut for creating some schema without using *cqlsh*

This is happening because we're writing *50k* rows of warmup data as can be seen below:
{code}
cqlsh> select count(*) from keyspace1.standard1 ;

 count
-------
 50000

(1 rows)
{code}

We can avoid writing warmup data using 
{code}
cassandra-stress write n=0 no-warmup -rate threads=1
{code}

but I would still expect to have *0* rows written when specifying *n=0*.





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