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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
Date Mon, 06 Jul 2015 17:57:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14615402#comment-14615402
] 

Robert Stupp commented on CASSANDRA-9739:
-----------------------------------------

That was the thing with _optimize counter read path_, right?

> Migrate counter-cache to be fully off-heap
> ------------------------------------------
>
>                 Key: CASSANDRA-9739
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9739
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Robert Stupp
>             Fix For: 3.x
>
>
> Counter cache still uses a concurrent map on-heap. This could go to off-heap and feels
doable now after CASSANDRA-8099.
> Evaluation should be done in advance based on a POC to prove that pure off-heap counter
cache buys a performance and/or gc-pressure improvement.
> In theory, elimination of on-heap management of the map should buy us some benefit.



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