DCAwareRoundRobinPolicy.NewQueryPlan Method

DCAwareRoundRobinPolicyNewQueryPlan Method

Returns the hosts to use for a new query.

The returned plan will always try each known host in the local datacenter first, and then, if none of the local host is reachable, will try up to a configurable number of other host per remote datacenter. The order of the local node in the returned query plan will follow a Round-robin algorithm.

Namespace: Cassandra
Assembly: Cassandra (in Cassandra.dll) Version: 3.2.0

Syntax

Copy

public IEnumerable<Host> NewQueryPlan(
	string keyspace,
	IStatement query
)

Parameters

keyspace: Type: SystemString
Keyspace on which the query is going to be executed
query: Type: CassandraIStatement
the query for which to build the plan.

Return Value

Type: IEnumerableHost
a new query plan, i.e. an iterator indicating which host to try first for querying, which one to use as failover, etc...

Implements

ILoadBalancingPolicyNewQueryPlan(String, IStatement)

Reference

DCAwareRoundRobinPolicy Class

Cassandra Namespace