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From "Dinesh Joshi (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-14540) Internode messaging handshake sends wrong messaging version number
Date Mon, 25 Jun 2018 05:17:00 GMT


Dinesh Joshi commented on CASSANDRA-14540:

Thanks, [~jasobrown]Ā LGTM +1

> Internode messaging handshake sends wrong messaging version number
> ------------------------------------------------------------------
>                 Key: CASSANDRA-14540
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>            Reporter: Jason Brown
>            Assignee: Jason Brown
>            Priority: Blocker
>             Fix For: 4.x
> With the refactor of internode messaging to netty in 4.0, we abstracted the protocol
handshakes messages into a class and handlers. There is a bug when the initiator of the connection
sends, in the third message of the handshake, it's own default protocol version number ({{MessagingService.current_version}}),
rather than the negotiated version. This was not causing any obvious problems when CASSANDRA-8457
was initially committed, but the bug is exposed after CASSANDRA-7544. The problem is during
rolling upgrades of 3.0/3.X to 4.0, nodes cannot correctly connect. 

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