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Posted to commits@cassandra.apache.org by "Stefania (JIRA)" <ji...@apache.org> on 2016/11/17 03:31:58 UTC

[jira] [Created] (CASSANDRA-12919) Fix inconsistencies in cassandra-stress load balancing policy

Stefania created CASSANDRA-12919:
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             Summary: Fix inconsistencies in cassandra-stress load balancing policy
                 Key: CASSANDRA-12919
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12919
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Stefania
            Assignee: Stefania
            Priority: Minor
             Fix For: 3.0.x, 3.x


The default load balancing policy in cassandra-stress is null, which means that the driver will currently wrap {{DCAwareRoundRobinPolicy}} with {{TokenAwarePolicy}}. 

However, when a white list of nodes or a data center are specified in the command line options, then either {{WhiteListPolicy}} or {{DCAwareRoundRobinPolicy}} are used respectively, without wrapping them in a TokenAwarePolicy.

This means that in the default case token aware routing is applied, but in some cases it is not. Token aware routing could give a performance boost of up to 2.5 times on bare metal, making comparisons of workloads problematic.



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