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https://issues.apache.org/jira/browse/CASSANDRA-19920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17883392#comment-17883392
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David Capwell commented on CASSANDRA-19920:
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Mostly +1 from me. This needs to be rebased and sent a feedback branch here
https://github.com/bdeggleston/cassandra/pull/10/files. Nothing major, mostly
cleanup or fixing a few test functions.
> CEP-15 (C*): Read accord repair cfk keys from sstable index.
> ------------------------------------------------------------
>
> Key: CASSANDRA-19920
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19920
> Project: Cassandra
> Issue Type: Bug
> Components: Accord
> Reporter: Blake Eggleston
> Assignee: Blake Eggleston
> Priority: Normal
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In clusters where accord repairs are dealing with a lot of keys, reading the
> keys via cql can take up to 90% of cpu time. This patch switches to reading
> cfk keys out of the sstable index, which effectively removes that step of
> accord repair from the profiler output. Given the structure of the CFK table
> and how C* reads compound partition keys with local partitioner, this is a
> little involved since we need to properly handle exclusive starts and
> inclusive ends without a full partition key.
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