Matt Stump created CASSANDRA-8195:
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Summary: 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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