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Stefania commented on CASSANDRA-13773:
--------------------------------------
I've started the dtests on our internal CI, if there is a way to run them on
CircleCI please launch them and I haven't set it up yet.
I've tested a bit locally as well, and I think we are better off skipping the
command entirely when {{n=0}}, not just the warm-up, otherwise
{{cassandra-stress write n=0}} (with no rate specified) will loop over
different rates and sleep for no good reason whatsoever. So I suggest that we
create the schema and then exit, see
[here|https://github.com/apache/cassandra/compare/trunk...stef1927:13773-3.0#diff-fd2f2d2364937fcb1c0d73c8314f1418R57].
> 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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