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https://issues.apache.org/jira/browse/CASSANDRA-675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12799809#action_12799809
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Jonathan Ellis commented on CASSANDRA-675:
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I took another look and although I really want to call this a bug fix and get
it into 0.5.0, the changes to wakeup/interestops make me nervous; we have seen
jvm bugs around this area before. I'm not comfortable slipping it in to a
stable branch in the final stages of RC.
> 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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