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Posted to commits@cassandra.apache.org by "Brandon Williams (JIRA)" <ji...@apache.org> on 2014/09/18 23:23:34 UTC

[jira] [Created] (CASSANDRA-7974) Enable tooling to detect hot partitions

Brandon Williams created CASSANDRA-7974:
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             Summary: Enable tooling to detect hot partitions
                 Key: CASSANDRA-7974
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7974
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Brandon Williams
            Assignee: Brandon Williams


Sometimes you know you have a hot partition by the load on a replica set, but have no way of determining which partition it is.  Tracing is inadequate for this without a lot of post-tracing analysis that might not yield results.  Since we already include stream-lib for HLL in compaction metadata, it shouldn't be too hard to wire up topK for X seconds via jmx/nodetool and then return the top partitions hit.



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