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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5521) move IndexSummary off heap
Date Wed, 01 May 2013 05:56:18 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646352#comment-13646352
] 

Pavel Yaskevich edited comment on CASSANDRA-5521 at 5/1/13 5:55 AM:
--------------------------------------------------------------------

Have we considered using vint encoding on those arrays as we keep them in memory anyway to
minimize space consumption?

Edit: i remember now why that is not a good idea :) I wonder though how what could memory
footprint be if we use TreeMap inside and keys and offsets (in vint encoding) saved in native
memory...
                
      was (Author: xedin):
    Have we considered using vint encoding on those arrays as we keep them in memory anyway
to minimize space consumption?
                  
> 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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