DowngradingConsistencyRetryPolicy.OnUnavailable Method

DowngradingConsistencyRetryPolicyOnUnavailable Method

Defines whether to retry and at which consistency level on an unavailable exception.

This method triggers a maximum of one retry. If at least one replica is know to be alive, the operation is retried at a lower consistency level.

Namespace: Cassandra
Assembly: Cassandra (in Cassandra.dll) Version: 3.4.0

Syntax

public RetryDecision OnUnavailable(
	IStatement query,
	ConsistencyLevel cl,
	int requiredReplica,
	int aliveReplica,
	int nbRetry
)

query: Type: CassandraIStatement
the original query for which the consistency level cannot be achieved.
cl: Type: CassandraConsistencyLevel
the original consistency level for the operation.
requiredReplica: Type: SystemInt32
the number of replica that should have been (known) alive for the operation to be attempted.
aliveReplica: Type: SystemInt32
the number of replica that were know to be alive by the coordinator of the operation.
nbRetry: Type: SystemInt32
the number of retry already performed for this operation.

Type: RetryDecision
a RetryDecision as defined above.