renaming a keyspace, then trying to use original name again makes errorations
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                 Key: CASSANDRA-1548
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1548
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 0.7 beta 2
         Environment: encountered on Debian squeeze, with cassandra from HEAD 
(r1001931).  effects can be seen with both Telephus and Pycassa as clients; 
probably any.
            Reporter: paul cannon
            Priority: Minor


My test case does the following:

* Create a keyspace with at least one CF in it.
* Rename that keyspace
* Create a new keyspace with the same original name, containing a CF with the 
same name as earlier.

The second keyspace creation receives an error (although the keyspace does get 
created):

{{javax.management.InstanceAlreadyExistsException: 
org.apache.cassandra.db:type=ColumnFamilies,keyspace=keyspacename,columnfamily=cfname}}

After that point, trying to do almost anything with the new keyspace will 
generate the same error- even trying to drop it. This persists until cassandra 
itself is restarted.

One supposes that some JMX thing is lacking reregistration upon keyspace rename.

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