[jira] [Created] (CASSANDRA-9505) Expose sparse formatting via JMX and/or sstablemetadata

["Jim Witschey (JIRA)" <ji...@apache.org>]

Jim Witschey created CASSANDRA-9505:
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             Summary: Expose sparse formatting via JMX and/or sstablemetadata
                 Key: CASSANDRA-9505
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9505
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Jim Witschey
             Fix For: 3.0 beta 1


It'd be helpful for us in TE if we could differentiate between data written in the sparse and dense formats as described [here|https://github.com/pcmanus/cassandra/blob/8099/guide_8099.md#storage-format-on-disk-and-on-wire]. It'd help us to measure speed and space performance and to make sure the format is chosen correctly and consistently.

I don't know if this would be best exposed through a JMX endpoint, {{sstablemetadata}}, or both, but those seem like the most obvious exposure points.



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