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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5521) move IndexSummary off heap
Date Wed, 01 May 2013 16:12:17 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646678#comment-13646678
] 

Jonathan Ellis commented on CASSANDRA-5521:
-------------------------------------------

bq. So why not compare directly without creating a buffer first?

That doesn't quite work, since we need to compare the Token, not the key itself.

So, revised suggestion: allow the partitioner to decorate a Memory location, instead of forcing
us to create a ByteBuffer first.
                
> move IndexSummary off heap
> --------------------------
>
>                 Key: CASSANDRA-5521
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5521
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>             Fix For: 2.0
>
>
> IndexSummary can still use a lot of heap for narrow-row sstables.  (It can also contribute
to memory fragmentation because of the large arrays it creates.)

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