Add KeyspaceChange CqlResultType
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Key: CASSANDRA-3707
URL: https://issues.apache.org/jira/browse/CASSANDRA-3707
Project: Cassandra
Issue Type: New Feature
Components: API
Reporter: Jonathan Ellis
Priority: Minor
Fix For: 1.1
High level clients want to handle failover and load balancing transparently to
the application, which means not just connection pooling but moving an existing
connection to another server if necessary. When this happens, the client needs
to know what the active keyspace was before failover, so it can set it to the
same one in the new connection.
Currently some clients handle this by checking for "SET KEYSPACE" queries,
which violates the design principle that clients shouldn't have to parse CQL.
Adding a new CqlResultType (that is set in response to a SET KEYSPACE command)
would make this unnecessary.
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