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Benedict commented on CASSANDRA-8730:
-------------------------------------
OK, I've pushed an updated version that strips out all of the class cleanup and
only optimises each of the comparison methods; it also extends the current
timestamp comparison tests to exhaustively check all permutations of any single
bit, as well as a larger collection of random values that we compare
exhaustively with each other (rather than only enough to sort). I will perform
the class cleanup in CASSANDRA-8759 as a follow up.
> Optimize UUIDType comparisons
> -----------------------------
>
> Key: CASSANDRA-8730
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8730
> Project: Cassandra
> Issue Type: Improvement
> Reporter: J.B. Langston
> Assignee: Benedict
> Fix For: 2.1.4
>
>
> Compaction is slow on tables using compound keys containing UUIDs due to
> being CPU bound by key comparison. [~benedict] said he sees some easy
> optimizations that could be made for UUID comparison.
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