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From "Jason Brown (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8457) nio MessagingService
Date Wed, 26 Jul 2017 19:08:01 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102128#comment-16102128
] 

Jason Brown commented on CASSANDRA-8457:
----------------------------------------

dtests running locally, including upgrade and no_vodes tests, are passing (with the exception
of those not working on trunk, and one other that is related to CASSANDRA-12229). 

[~slebresne] and I discussed offline, and he agreed the {{OutboundConnectionParams}} taking
a {{Consumer<QueuedMessage>}} was reasonable. Hence, that was implemented. Current branch
also has a minor fix for reconnecting when a connection is rejected due to protocol version
mismatch (discovered via dtest upgrade tests)

> nio MessagingService
> --------------------
>
>                 Key: CASSANDRA-8457
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8457
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Jonathan Ellis
>            Assignee: Jason Brown
>            Priority: Minor
>              Labels: netty, performance
>             Fix For: 4.x
>
>         Attachments: 8457-load.tgz
>
>
> Thread-per-peer (actually two each incoming and outbound) is a big contributor to context
switching, especially for larger clusters.  Let's look at switching to nio, possibly via Netty.



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