C. Scott Andreas updated CASSANDRA-9739:
    Component/s: Core

> 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
>          Components: Core
>            Reporter: Robert Stupp
>            Assignee: Robert Stupp
>            Priority: Major
>             Fix For: 4.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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