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Posted to commits@cassandra.apache.org by "Robert Stupp (JIRA)" <ji...@apache.org> on 2015/09/13 22:54:45 UTC

[jira] [Assigned] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap

     [ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Stupp reassigned CASSANDRA-9739:
---------------------------------------

    Assignee: Robert Stupp

> 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
>            Assignee: 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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