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https://issues.apache.org/jira/browse/CASSANDRA-8195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14187031#comment-14187031
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Brandon Williams commented on CASSANDRA-8195:
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Have you seen CASSANDRA-7974?
> Tools for discovering problem/largest partitions
> ------------------------------------------------
>
> Key: CASSANDRA-8195
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8195
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Matt Stump
>
> A very common problem is that a customer will have one or two very hot
> partitions. This could be a result of an unforeseen usage pattern or a
> problem user. Tracking down the offending parition/row currently involves a
> linear scan of the data.
> We should keep stats on the largest N partitions encountered and make those
> visible via nodetool as we do with cfhistograms. A reasonable suggestion for
> N is 10, meaning the top 10 partition keys and their size would be visible.
> We should also probably keep this info as part of the sstable metadata.
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