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https://issues.apache.org/jira/browse/CASSANDRA-8730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14309953#comment-14309953
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J.B. Langston commented on CASSANDRA-8730:
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Hmm, setting my clock back didn't help. I still got the same results as before.
I'm not sure why it did not compact away almost half the data before.
> 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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