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https://issues.apache.org/jira/browse/CASSANDRA-6045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770000#comment-13770000
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Jonathan Ellis commented on CASSANDRA-6045:
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If we can make this work, I'd be happy to get rid of the caching at the RAR
level (CASSANDRA-4937, CASSANDRA-5661). This will be a minor regression for
uncompressed readers but I'm okay with that; compression is by far more common.
> Compressed block cache
> ----------------------
>
> Key: CASSANDRA-6045
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6045
> Project: Cassandra
> Issue Type: Bug
> Reporter: Jonathan Ellis
> Assignee: Tyler Hobbs
> Fix For: 2.1
>
>
> CRAR can spend a lot of time repeatedly decompressing the same hot blocks.
> Let's cache those (preferably allocated off heap) to avoid this.
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