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https://issues.apache.org/jira/browse/CASSANDRA-5515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13712998#comment-13712998
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Jonathan Ellis commented on CASSANDRA-5515:
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Hmm. I think either leave it out or track it separately. Those tend to be M/R
type queries (that touch the entire dataset or close to it) than an indicator
of hotness.
> Track sstable coldness
> ----------------------
>
> Key: CASSANDRA-5515
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5515
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Tyler Hobbs
> Fix For: 2.0.1
>
>
> Keeping a count of reads per-sstable would allow STCS to automatically ignore
> cold data rather than recompacting it constantly with hot data, dramatically
> reducing compaction load for typical time series applications and others with
> time-correlated access patterns. We would not need a separate age-tiered
> compaction strategy.
> (This will really be useful in conjunction with CASSANDRA-5514.)
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