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https://issues.apache.org/jira/browse/CASSANDRA-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928782#action_12928782
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T Jake Luciani commented on CASSANDRA-1714:
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Regarding 2) How do you plan on removing .array() while keeping the buffers
immutable? every .get() call will increment the position. Just call
duplicate() before everything like you did with message digest?
> 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
> Fix For: 0.7.1
>
> Attachments: zerocopy.txt
>
>
> 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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