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https://issues.apache.org/jira/browse/CASSANDRA-14841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16684056#comment-16684056
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Ariel Weisberg commented on CASSANDRA-14841:
--------------------------------------------
Aleksey pointed out that in mixed version clusters we could still write to the
tables and just omit the port column. Then you could add the columns and be
able to read from the table. [~tommy_s] can you add as a comment a description
of the steps to add the column?
> Don't write to system_distributed.repair_history, system_traces.sessions,
> system_traces.events in mixed version 3.X/4.0 clusters
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-14841
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14841
> Project: Cassandra
> Issue Type: Bug
> Reporter: Tommy Stendahl
> Assignee: Ariel Weisberg
> Priority: Major
> Fix For: 4.0
>
>
> When upgrading from 3.x to 4.0 I get exceptions in the old nodes once the
> first 4.0 node starts up. I have tested to upgrade from both 3.0.15 and
> 3.11.3 and get the same problem.
>
> {noformat}
> 2018-10-22T11:12:05.060+0200 ERROR
> [MessagingService-Incoming-/10.216.193.244] CassandraDaemon.java:228
> Exception in thread Thread[MessagingService-Incoming-/10.216.193.244,5,main]
> java.lang.RuntimeException: Unknown column coordinator_port during
> deserialization
> at org.apache.cassandra.db.Columns$Serializer.deserialize(Columns.java:452)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.db.filter.ColumnFilter$Serializer.deserialize(ColumnFilter.java:482)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.db.ReadCommand$Serializer.deserialize(ReadCommand.java:760)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.db.ReadCommand$Serializer.deserialize(ReadCommand.java:697)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.io.ForwardingVersionedSerializer.deserialize(ForwardingVersionedSerializer.java:50)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at org.apache.cassandra.net.MessageIn.read(MessageIn.java:123)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.net.IncomingTcpConnection.receiveMessage(IncomingTcpConnection.java:192)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.net.IncomingTcpConnection.receiveMessages(IncomingTcpConnection.java:180)
> ~[apache-cassandra-3.11.3.jar:3.11.3]
> at
> org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:94)
> ~[apache-cassandra-3.11.3.jar:3.11.3]{noformat}
> I think it was introduced by CASSANDRA-7544.
>
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