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Posted to commits@cassandra.apache.org by "Wei Deng (JIRA)" <ji...@apache.org> on 2016/08/12 07:57:20 UTC
[jira] [Commented] (CASSANDRA-11035) Use cardinality estimation to
pick better compaction candidates for STCS (SizeTieredCompactionStrategy)
[ https://issues.apache.org/jira/browse/CASSANDRA-11035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15418489#comment-15418489 ]
Wei Deng commented on CASSANDRA-11035:
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Is there plan to make this available in trunk?
> Use cardinality estimation to pick better compaction candidates for STCS (SizeTieredCompactionStrategy)
> -------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-11035
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11035
> Project: Cassandra
> Issue Type: Improvement
> Components: Compaction
> Reporter: Wei Deng
> Assignee: Marcus Eriksson
>
> This was initially mentioned in this blog post http://www.datastax.com/dev/blog/improving-compaction-in-cassandra-with-cardinality-estimation but I couldn't find any existing JIRA for it. As stated by [~jbellis], "Potentially even more useful would be using cardinality estimation to pick better compaction candidates. Instead of blindly merging sstables of a similar size a la SizeTieredCompactionStrategy." The L0 STCS in LCS should benefit as well.
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