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https://issues.apache.org/jira/browse/CASSANDRA-2175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-2175.
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Resolution: Fixed
Reviewer: brandon.williams
Assignee: Jonathan Ellis
committed
> make key cache preheating use less memory
> -----------------------------------------
>
> Key: CASSANDRA-2175
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2175
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: 0.6.9, 0.7.0 rc 3
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.6.12, 0.7.3
>
> Attachments: 2175-0.6.txt
>
>
> CASSANDRA-1878 pre-heats the key cache post-compaction so latency doesn't
> suffer while warming the cache back up. This can double the memory used
> temporarily; for a large key cache, this can have a substantial impact.
> For now a boolean on/off is probably the best we can do. With
> http://code.google.com/p/concurrentlinkedhashmap/issues/detail?id=21 though,
> we could say "preheat the hottest X keys."
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