[CASSANDRA-13773] cassandra-stress writes even data when n=0

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.0.15, 3.11.1, 4.0-alpha1, 4.0
• Component/s: Tool/stress
• Severity: Low
• Assignee: Eduard Tudenhoefner
• Reporter: Eduard Tudenhoefner

Authors

Eduard Tudenhoefner

Reviewers

Stefania Alborghetti

• Created: 17/Aug/17 17:01
• Updated: 15/May/20 08:04
• Resolved: 22/Aug/17 01:40

Description

This is very unintuitive as

cassandra-stress write n=0 -rate threads=1

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:

cqlsh> select count(*) from keyspace1.standard1 ;

 count
-------
 50000

(1 rows)

We can avoid writing warmup data using

cassandra-stress write n=0 no-warmup -rate threads=1

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