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https://issues.apache.org/jira/browse/CASSANDRA-1543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wouter de Bie updated CASSANDRA-1543:
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Attachment: 0.6.5_dynamic_snitch_partial.patch
> DynamicEndPointSnitch backport not functional
> ---------------------------------------------
>
> Key: CASSANDRA-1543
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1543
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.6.5
> Reporter: Wouter de Bie
> Attachments: 0.6.5_dynamic_snitch_partial.patch
>
>
> There seems to something really wrong with the DynamicEndpointSnitch in
> cassandra 0.6.5. There are several issues with it:
> 1) DatabaseDescriptor.readTablesFromXml() uses Boolean.getBoolean() with the
> value of System.getProperty("cassandra.dynamic_snitch"). However,
> Boolean.getBoolean() also calls System.getProperty(). The result is that it
> executes a System.getProperty("true") or System.getProperty("false").
> 2) The RackAwareStrategy expects an instance of EndPointSnitch and will throw
> a RuntimeException if it's not. However, the DynamicEndpointSnitch wraps an
> EndPointSnitch, but extends AbstractEndpointSnitch. RackUnawareStrategy
> doesn't have this problem.
> 3) Since the DynamicEndpointSnitch registers an MBean, but is instantiated
> for every KeySpace, it breaks on trying to reregister the MBean.
> I've attached a patch that solve problem 1 and 2, but not 3.
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