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https://issues.apache.org/jira/browse/CASSANDRA-1448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904527#action_12904527
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David Viner commented on CASSANDRA-1448:
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Happy to make that change... although that would require a list (somewhere) of
the set of mbean names in use... is that available to the callers of the mbean
-> reload()?
Also, in the snitch constructor, how would I determine what keyspace is being
used? The constructor doesn't appear to get any parameters. Is there a global
config object that I could access or some such?
Or, since this whole point is moot for 0.7.x in the PropertyFileEndPointSnitch,
is this really a moot issue? It might impact other areas, per the discussion
on the irc channel (e.g., dynamic eps). But that's an issue for a separate bug.
> 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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