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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6804) Consolidate on-disk and NativeCell layouts so that reads from disk require less memory
Date Thu, 06 Mar 2014 14:55:18 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13922598#comment-13922598
] 

Jonathan Ellis commented on CASSANDRA-6804:
-------------------------------------------

bq. With further work we may also be able to reach a zero-copy allocation as well

Assuming we can get CASSANDRA-6045 to work?

> Consolidate on-disk and NativeCell layouts so that reads from disk require less memory
> --------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6804
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6804
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Benedict
>            Assignee: Benedict
>             Fix For: 3.0
>
>
> If the on-disk Cell representation were the same as we use for NativeCell, we could easily
allocate a NativeCell instead of a BufferCell, immediately reducing the amount of garbage
generated on reads. With further work we may also be able to reach a zero-copy allocation
as well, reducing further the read costs.



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