[jira] [Resolved] (CASSANDRA-4619) Make non-heap memory usable for key cache

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-4619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-4619.
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    Resolution: Won't Fix

The (on-heap) overhead of keeping key cache entries off-heap would be roughly equivalent to the cache entry itself.

Don't worry, Cassandra gets plenty of benefit from the OS page cache even if you are not using row cache.
                
> Make non-heap memory usable for key cache
> -----------------------------------------
>
>                 Key: CASSANDRA-4619
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4619
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: kalyan
>            Priority: Minor
>
> There might be use cases where row cache is not useful because of the data use case patterns ( too big a data wherein each is row is less frequently looked up). Hence a mechanism is needed to reuse the available non-heap memory on the node to use for key cache. 

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