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Posted to commits@cassandra.apache.org by "Vijay (JIRA)" <ji...@apache.org> on 2011/02/22 18:34:38 UTC
[jira] Commented: (CASSANDRA-2167) Add a deserialize(ByteBuffer)
method to ColumnFamilySerializer
[ https://issues.apache.org/jira/browse/CASSANDRA-2167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12997916#comment-12997916 ]
Vijay commented on CASSANDRA-2167:
----------------------------------
Initial Tests show better performance with this approach... BB.array is not allowed for DBB and it wasn't clean and this approach seems to fit better with the existing approaches.
> Add a deserialize(ByteBuffer) method to ColumnFamilySerializer
> --------------------------------------------------------------
>
> Key: CASSANDRA-2167
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2167
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Vijay
> Priority: Minor
> Attachments: 0001-Reduce-Byte-Copy-Streams.txt, 0002-Reduce-Byte-Copy-BBUtil.txt, 0003-Reduce-BB-Copy.txt
>
>
> by adding deserialize bytebuffer in the columnFamilySerializer we might be able to avoid copying of the bytes[] while deserializing the CF.
> This can be done using....
> ByteBuffer buff = ByteBuffer.wrap(bb.array(), bb.position(), length);
> This is an improvement on "https://issues.apache.org/jira/browse/CASSANDRA-1969" Plz see jonathan's comment.
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