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https://issues.apache.org/jira/browse/CASSANDRA-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-1714:
--------------------------------------
Attachment: 1714-v5-07.txt
v5 attached against 0.7, w/ tests passing.
Almost all the getArray calls were for data about to be written to a
DataOutput. Replaced these with BBU.write or BBU.writeWithLength calls (moved
& renamed from FBU).
> 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: 1714-v5-07.txt, CASSANDRA-1714-0.7.patch,
> CASSANDRA-1714-v2.patch, CASSANDRA-1714-v3.patch,
> CASSANDRA-1714-v4-trunk.patch, CASSANDRA-1714.patch, zerocopy.txt
>
> Original Estimate: 32h
> Time Spent: 32h
> Remaining Estimate: 0h
>
> 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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