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Marcus Eriksson resolved CASSANDRA-11433. ----------------------------------------- Resolution: Duplicate > Allow to use different algorithms to choose compaction candidates. > ------------------------------------------------------------------ > > Key: CASSANDRA-11433 > URL: https://issues.apache.org/jira/browse/CASSANDRA-11433 > Project: Cassandra > Issue Type: Improvement > Components: Compaction > Reporter: Dikang Gu > Assignee: Dikang Gu > Labels: performance > > I'm experimenting different algorithms for choosing the compaction > candidates, for leveled compaction. > Instead of the round robin selection by default, one of our experiment is to > choose the candidates with least overlapping sstable sizes. And I see > significant drop of cpu usage, and reduce of compacted bytes count, in one of > our write heavy system. > I think it's useful to make it configurable for how to choose the compaction > candidates. > The idea is from rocksdb. (http://rocksdb.org/blog/2921/compaction_pri/). -- This message was sent by Atlassian JIRA (v6.3.4#6332)