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From "David Viner (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-1448) PropertyFileEndPointSnitch can only be used once per configuration
Date Tue, 31 Aug 2010 04:01:53 GMT


David Viner updated CASSANDRA-1448:

    Attachment: patch-for-mbean-error.patch

This patch is against the 0.6.4 source tag.  However, it should apply equally to the 0.6.5

The 0.7.x tree does not need this patch, since that code appears to have taken out the mbean
class entirely.

> PropertyFileEndPointSnitch can only be used once per configuration
> ------------------------------------------------------------------
>                 Key: CASSANDRA-1448
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Contrib
>    Affects Versions: 0.6.4, 0.6.5, 0.7 beta 1
>         Environment: Debian
>            Reporter: David Viner
>             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 (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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