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Posted to commits@cassandra.apache.org by "Vijay (JIRA)" <ji...@apache.org> on 2013/06/14 19:10:20 UTC

[jira] [Commented] (CASSANDRA-5357) Query cache

    [ https://issues.apache.org/jira/browse/CASSANDRA-5357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683536#comment-13683536 ] 

Vijay commented on CASSANDRA-5357:
----------------------------------

Hi Jonathan, The plan is to make the Entry<k,v> offheap (with FM in the heap) of the map of heap after promoting the query filter. 
I might end up removing the CLHM and implement a Concurrent HM to reduce the over head... 

Let me know if it is fine.
                
> Query cache
> -----------
>
>                 Key: CASSANDRA-5357
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5357
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>
> I think that most people expect the row cache to act like a query cache, because that's a reasonable model.  Caching the entire partition is, in retrospect, not really reasonable, so it's not surprising that it catches people off guard, especially given the confusion we've inflicted on ourselves as to what a "row" constitutes.
> I propose replacing it with a true query cache.

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