Apache Cassandra™ 2.0


Automatically updates all nodes using gossip when adding new nodes.

The GossipingPropertyFileSnitch defines a local node's data center and rack; it uses gossip for propagating this information to other nodes.

The cassandra-rackdc.properties file defines the default data center and rack used by this snitch:
The location of the conf directory depends on the type of installation:
  • Packaged installs: /etc/cassandra/conf/cassandra-rackdc.properties
  • Tarball installs: install_location/conf/cassandra-rackdc.properties

To migrate from the PropertyFileSnitch to the GossipingPropertyFileSnitch, update one node at a time to allow gossip time to propagate. The PropertyFileSnitch is used as a fallback when cassandra-topologies.properties is present.