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From "Edgardo Vega (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8299) cassandra-stress unique keys
Date Wed, 12 Nov 2014 16:52:34 GMT
Edgardo Vega created CASSANDRA-8299:
---------------------------------------

             Summary: cassandra-stress unique keys
                 Key: CASSANDRA-8299
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8299
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
         Environment: Centos 6.5 Cassandra version 2.1.1
            Reporter: Edgardo Vega


In the old stress tool you could use -n 10000 and get 10000 unique keys in the keyspace. 

In the new stress tool there doesn't seem to be a way to do this. For example if I have the
following definition:

table_definition: |
  CREATE TABLE table(
        key uuid PRIMARY KEY,
        col1 text,
        col2 text,
        col3 text
  ) WITH comment='A table'

### Column Distribution Specifications ###

columnspec:
  - name: key
    size: fixed(36)       
    population: uniform(1..100B)   

  - name: col1
    size: fixed(100)

  - name: col2
    size: fixed(100)

  - name: col3
    size: fixed(100)

and then run 

cassandra-stress user n=10000 profile=stress.yaml ops\(insert=1\)

If you look at the keyspace was only 59000 keys. The new tool needs to be able to generated
unique ids. In our tested we want to see how the number of keys effects the cluster when doing
queries.




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