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From "David Viner (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-1448) PropertyFileEndPointSnitch can only be used once per configuration
Date Tue, 31 Aug 2010 03:56:53 GMT
PropertyFileEndPointSnitch can only be used once per configuration
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                 Key: CASSANDRA-1448
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1448
             Project: Cassandra
          Issue Type: Bug
          Components: Contrib
    Affects Versions: 0.7 beta 1, 0.6.5, 0.6.4
         Environment: Debian
            Reporter: David Viner


When a user configures a node to have more than one keyspace, and two keyspaces uses PropertyFileEndPointSnitch
as the EndpointSnitch, Cassandra throws an error on startup saying:

ERROR [main] 2010-08-30 23:55:23,402 DatabaseDescriptor.java (line 536) Fatal error: Invalid
endpointsnitch class org.apache.cassandra.locator.PropertyFileEndPointSnitch null

This appears to be directly tied to the use of MBeanServer.registerMBean().  If more than
one instance is tied to the mbean server, it will return an InstanceAlreadyExistsException.
 Since this appears to be a valid exception, but causes no errors in operation, the snitch
should catch it and continue on.

Patch file to follow.

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