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https://issues.apache.org/jira/browse/CASSANDRA-1448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909893#action_12909893
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Brandon Williams commented on CASSANDRA-1448:
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I'm going to table this issue. There are only a few options I see for this:
special casing the PFEPS instantiation, or changing the endpoint interface so
that there is a method we can pass the keyspace to (which could possibly break
any other custom snitches people are using in 0.6) There is a compromise where
we could add something unique to the mbean name, but you wouldn't be able to
tell which snitch belonged to a keyspace. None of these seem very attractive,
and this issue does not affect 0.7, so anything we do here will just add pain
to merges.
> PropertyFileEndPointSnitch can only be used once per configuration
> ------------------------------------------------------------------
>
> Key: CASSANDRA-1448
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1448
> Project: Cassandra
> Issue Type: Bug
> Components: Contrib
> Affects Versions: 0.6.4, 0.6.5, 0.7 beta 1
> Environment: Debian
> Reporter: David Viner
> Assignee: Brandon Williams
> Fix For: 0.6.6
>
> Attachments: patch-for-mbean-error.patch
>
>
> 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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