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https://issues.apache.org/jira/browse/CASSANDRA-675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12799822#action_12799822
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Jun Rao commented on CASSANDRA-675:
-----------------------------------
The exception change and the selector change are independent. Probably more
than 70% of the benefit comes from the former. Will people be interested in
porting just the first change to 0.5?
> TcpReader is slow because of using Exception handling in the normal path
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-675
> URL: https://issues.apache.org/jira/browse/CASSANDRA-675
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.9
> Reporter: Jun Rao
> Assignee: Jun Rao
> Fix For: 0.9
>
> Attachments: issue675.patchv1, issue675.patchv2
>
>
> TcpReader has the overhead of 1-2ms per message reading. This makes quorum
> reads too slow.
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