Maciej Sokol created CASSANDRA-18200:
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             Summary: Cassandra messaging to self changed behavior
                 Key: CASSANDRA-18200
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18200
             Project: Cassandra
          Issue Type: Bug
          Components: Messaging/Internode
            Reporter: Maciej Sokol


During testing of Cassandra on AWS, we noticed some behavior changes between 
Cassandra 3.11 and Cassandra 4.0 when it comes to messaging.
When performing a range query with consistency local_quorum, Cassandra sents a 
request to itself and some peers.
In case of Cassandra 4.0, it's trying to connect to itself using the 
broadcast_address while in Cassandra 3.11 it's connecting using the local 
address (see 
https://github.com/apache/cassandra/blob/cassandra-3.11/src/java/org/apache/cassandra/net/OutboundTcpConnectionPool.java#L152.

This translation seems to be missing in Cassandra 4.X, i think the best place 
to fix it would be here: 
[https://github.com/apache/cassandra/blob/cassandra-4.0/src/java/org/apache/cassandra/net/OutboundConnectionSettings.java#L451]



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