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Posted to commits@cassandra.apache.org by "Sergio Bossa (JIRA)" <ji...@apache.org> on 2014/04/16 17:00:28 UTC

[jira] [Created] (CASSANDRA-7047) TriggerExecutor should group mutations by row key

Sergio Bossa created CASSANDRA-7047:
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             Summary: TriggerExecutor should group mutations by row key
                 Key: CASSANDRA-7047
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7047
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Sergio Bossa
            Assignee: Sergio Bossa


TriggerExecutor doesn't currently group mutations returned by triggers even if belonging to the same row key: while harmful per se (at least, I think so), this is definitely a performance problem, because each mutation is a *cluster* mutation, generating more network traffic, more disk IO and more index calls (if present).



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