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From "Ananth Gundabattula (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-5684) Multi-DC not working between 1.1.10 and 1.2.4 version
Date Fri, 21 Jun 2013 11:26:19 GMT
Ananth Gundabattula created CASSANDRA-5684:

             Summary: Multi-DC not working between 1.1.10 and 1.2.4 version
                 Key: CASSANDRA-5684
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.4
         Environment: Linux
            Reporter: Ananth Gundabattula

We wanted to upgrade to a higher version of cassandra ( a custom build of 1.2.4 ) from current
cassandra version 1.1.10.

The way we wanted to upgrade is to build a new cluster and enable multi-dc replication; rebuild
and switch the application layer to the new cluster. This enabled us to have the least downtime.

However, I was not able to get a multi-dc going between these two versions. I followed pretty
much the instructions here ( for the 1.2.4 version )
I tried enabling multi-dc using these instructions for the 1.1.10 cluster

Mixing both the approaches did not work either. Specifying a 1.2.4 node as one of the 1.1.10
cluster seed nodes caused errors in the startup of 1.2.4 node. The error was not an exception
but a message looking like this in the logs : ClusterName mismatch from / DC1!=DC2

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