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https://issues.apache.org/jira/browse/CASSANDRA-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14977863#comment-14977863
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Jeff Jirsa commented on CASSANDRA-10276:
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I'm definitely not disagreeing with you, but like always, the devil's in the
details. If there were 3 40MB files, 3 120M files, 3 500M files, 3 2G files, 3
8G files, and 3 24G files all in one window, it might be nice to do one big
rollup compaction (and that's a pretty extreme example, but let's look at the
edge cases, because someone's bound to hit it - one single 40M flush away from
having a single 100G file in normal STCS operation).
> With DTCS, do STCS in windows if more than max_threshold sstables
> -----------------------------------------------------------------
>
> Key: CASSANDRA-10276
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10276
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Fix For: 3.x, 2.1.x, 2.2.x
>
>
> To avoid constant recompaction of files in big ( > max threshold) DTCS
> windows, we should do STCS of those files.
> Patch here: https://github.com/krummas/cassandra/commits/marcuse/dtcs_stcs
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