Perform one of the following tasks, depending on the endpoint_snitch setting in your old cassandra.yaml file:
endpoint_snitch URL Upgrade Task org.apache.cassandra.locator.SimpleSnitch Leave the DseDelegateSnitch in the cassandra.yaml and the default delegated_snitch in the new dse.yaml unchanged. org.apache.cassandra.locator.PropertyFileSnitch Copy/paste the cassandra-topology.properties from the old installation to <install_location>/ resources/cassandra/conf, overwriting the new properties file. Set the delegated_snitch setting in the new dse.yaml file to: org.apache.cassandra.locator.PropertyFileSnitch. Any other snitch URL Change the default delegated_snitch in the new dse.yaml file to your current snitch setting. The default delegated_snitch setting is specified in the new dse.yaml file:
delegated_snitch: com.datastax.bdp.snitch.DseSimpleSnitchThe dse.yaml is located in <install_location>/resources/dse/conf.