Ananth Gundabattula created CASSANDRA-5684:
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Summary: Multi-DC not working between 1.1.10 and 1.2.4 version
Key: CASSANDRA-5684
URL: https://issues.apache.org/jira/browse/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 )
http://www.datastax.com/documentation/cassandra/1.2/index.html#cassandra/operations/ops_add_dc_to_cluster_t.html.
I tried enabling multi-dc using these instructions for the 1.1.10 cluster
http://www.datastax.com/docs/1.0/initialize/cluster_init_multi_dc
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 /10.xxx.xx.xx DC1!=DC2
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