Jason Brown created CASSANDRA-14540:
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Summary: Internode messaging handshake sends wrong messaging
version number
Key: CASSANDRA-14540
URL: https://issues.apache.org/jira/browse/CASSANDRA-14540
Project: Cassandra
Issue Type: Bug
Components: Streaming and Messaging
Reporter: Jason Brown
Assignee: Jason Brown
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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