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From "Joshua McKenzie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11541) correct the java documentation for SlabAllocator and NativeAllocator
Date Thu, 05 May 2016 22:12:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15273206#comment-15273206
] 

Joshua McKenzie commented on CASSANDRA-11541:
---------------------------------------------

[~jasonstack]: patch doesn't apply on 2.2. Is FixVersion wrong on this ticket?

> correct the java documentation for SlabAllocator and NativeAllocator
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-11541
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11541
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: ZhaoYang
>            Assignee: ZhaoYang
>            Priority: Trivial
>              Labels: document, lhf
>             Fix For: 2.2.x
>
>         Attachments: CASSANDRA-11541.patch
>
>
> I heard a lot that Cassandra uses 2MB slab allocation strategy for memtable to improve
its memory efficiency. But in fact, it has been changed from 2MB to 1 MB. 
> And in NativeAllocator, it's logarithmically from 8kb to 1mb.
> large number of tables may not cause too much trouble in term of memtable.



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