Defines whether to retry and at which consistency level on a write timeout.

This method triggers a maximum of one retry. If writeType == WriteType.BATCH_LOG, the write is retried with the initial consistency level. If writeType == WriteType.UNLOGGED_BATCH and at least one replica acknowleged, the write is retried with a lower consistency level (with unlogged batch, a write timeout can always mean that part of the batch haven't been persisted at' all, even if receivedAcks > 0). For other writeType, if we know the write has been persisted on at least one replica, we ignore the exception. Otherwise, an exception is thrown.

public RetryDecision OnWriteTimeout(
	IStatement query,
	ConsistencyLevel cl,
	string writeType,
	int requiredAcks,
	int receivedAcks,
	int nbRetry
)