[jira] Commented: (CASSANDRA-1714) zero-copy reads

["T Jake Luciani (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976851#action_12976851 ] 

T Jake Luciani commented on CASSANDRA-1714:
-------------------------------------------

Could you submit your direct friendly protocol changes here? https://issues.apache.org/jira/browse/THRIFT-883

> zero-copy reads
> ---------------
>
>                 Key: CASSANDRA-1714
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1714
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Pavel Yaskevich
>             Fix For: 0.7.1
>
>         Attachments: CASSANDRA-1714.patch, zerocopy.txt
>
>   Original Estimate: 32h
>  Remaining Estimate: 32h
>
> Since we are already using mmap'd ByteBuffers in MappedFileDataInput we should be able to do zero-copy reads (via buffer.slice()), which would give us better performance than CASSANDRA-1651 without having to worry about buffer management.

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