Sam Tunnicliffe created CASSANDRA-21004:
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Summary: Potential NPE when meta keyspace placements are empty
before CMS is initialized
Key: CASSANDRA-21004
URL: https://issues.apache.org/jira/browse/CASSANDRA-21004
Project: Apache Cassandra
Issue Type: Bug
Components: Transactional Cluster Metadata
Reporter: Sam Tunnicliffe
Assignee: Sam Tunnicliffe
During an upgrade to trunk there is a window before the CMS is initialized
where the {{system_cluster_metadata}} keyspace exists but is not replicated by
any peers. At this time, if a JMX client invokes {{getRangeToEndpointMap}} on
the {{org.apache.cassandra.db:type=StorageService}} mbean for this keyspace, it
will trigger an NPE on the server.
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