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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9704) On-wire backward compatibility for 8099
Date Mon, 03 Aug 2015 17:36:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14652159#comment-14652159
] 

Aleksey Yeschenko commented on CASSANDRA-9704:
----------------------------------------------

It looks like {{PartitionUpdateSerializer.serialize()}} is not implemented for {{version <
MessagingService.VERSION_30}}. The code is [commented out|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/partitions/PartitionUpdate.java#L704-L707]
and throwing {{UnsupportedOperationException}}, which would mean that 3.0 coordinators can't
compatibly forward to 2.2 nodes.

> On-wire backward compatibility for 8099
> ---------------------------------------
>
>                 Key: CASSANDRA-9704
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9704
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Sylvain Lebresne
>            Assignee: Tyler Hobbs
>             Fix For: 3.0 alpha 1
>
>         Attachments: 9704-2.1.txt
>
>
> The currently committed patch for CASSANDRA-8099 has left backward compatibility on the
wire as a TODO. This ticket is to track the actual doing (of which I know [~thobbs] has already
done a good chunk).



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