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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7974) Enable tooling to detect hot partitions
Date Fri, 19 Sep 2014 14:11:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140618#comment-14140618
] 

T Jake Luciani commented on CASSANDRA-7974:
-------------------------------------------

This can be done as part of CASSANDRA-7402?

> 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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