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https://issues.apache.org/jira/browse/CASSANDRA-7247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004005#comment-14004005
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Chris Lohfink edited comment on CASSANDRA-7247 at 5/20/14 10:15 PM:
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Added patch that uses the trace executor to track the partition thats updated
the most, has the most columns inserted (useful for finding rows that are too
wide) and the partitions with slowest insertion times. Will only track if
trace probability > 0. Gives (key,count,error) tuples
!jconsole.png!
was (Author: cnlwsu):
Added patch that uses the trace executor to track the partition thats updated
the most, has the most columns inserted (useful for finding rows that are too
wide) and the partitions with slowest insertion times. Will only track if
trace probability > 0. Gives (key,count,error) tuples
> Provide top ten most frequent keys per column family
> ----------------------------------------------------
>
> Key: CASSANDRA-7247
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7247
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Chris Lohfink
> Assignee: Chris Lohfink
> Priority: Minor
> Attachments: jconsole.png, patch.txt
>
>
> Since already have the nice addthis stream library, can use it to keep track
> of most frequent DecoratedKeys that come through the system using
> StreamSummaries ([nice
> explaination|http://boundary.com/blog/2013/05/14/approximate-heavy-hitters-the-spacesaving-algorithm/]).
> Then provide a new metric to access them via JMX.
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