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https://issues.apache.org/jira/browse/HBASE-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995307#comment-13995307
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Jesse Yates commented on HBASE-1811:
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Yeah, 7958 looks like a dup (timeline wise). Looks like good ideas always come
back around :)
We could make 7958 be the scan-time infrastructure and this one to be adding
comprehensive stats?
> Snapshot HFile and region statistics at compaction time and make info
> available to clients
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-1811
> URL: https://issues.apache.org/jira/browse/HBASE-1811
> Project: HBase
> Issue Type: Improvement
> Reporter: Andrew Purtell
> Priority: Minor
>
> Consider snapshotting HFile and region statistics at major and minor
> compaction time and making the info available to clients:
> * Key statistics
> ** cardinality
> ** length avg/min/max/stdev
> ** information content measure (entropy, etc.)
> ** histogram
> etc.
> * Value statistics
> ** length avg/min/max/stdev
> ** information content measure (entropy, etc.)
> ** histogram
> etc.
> * Region statistics
> ** density estimation
> ** KV count
> ** total storage size (on disk)
> ** total storage size (uncompressed)
> etc.
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