com.sleepycat.je.rep.arbitration

Interface ArbiterProvider

All Known Implementing Classes:

DesignatedPrimaryProvider

public interface ArbiterProvider

Provides access to arbitration services provided by different arbitration mechanisms.

Method Summary

Modifier and Type	Method and Description
boolean	activationPossible() Return true if the pre-requisites are in place to permit this node to enter active arbitration.
boolean	attemptActivation() Return true if this node has successfully entered active arbitration state.
void	endArbitration() End active arbitration.
int	getAckCount(Durability.ReplicaAckPolicy ackPolicy) Return the durability quorum size that is dictated by arbitration, for this replica ack policy.
int	getElectionQuorumSize(QuorumPolicy quorumPolicy) Return the election quorum size that is dictated by arbitration, for this quorum policy.
boolean	shouldEndArbitration(ReplicationMutableConfig newConfig) Return true if the environment configuration parameters specified in newConfig indicate that this node is not qualified to remain in active arbitration

Method Detail

activationPossible

boolean activationPossible()

Return true if the pre-requisites are in place to permit this node to enter active arbitration. Different provider implementations have different criteria. For example, the DesignatedPrimaryProvider requires that a node's designated primary configuration parameter is true.

attemptActivation

boolean attemptActivation()

Return true if this node has successfully entered active arbitration state.

endArbitration

void endArbitration()

End active arbitration.

getElectionQuorumSize

int getElectionQuorumSize(QuorumPolicy quorumPolicy)

Return the election quorum size that is dictated by arbitration, for this quorum policy. The arbiter provider has the leeway to decide that the quorum policy takes precedence, and that arbitration does not reduce the election quorum size.

getAckCount

int getAckCount(Durability.ReplicaAckPolicy ackPolicy)

Return the durability quorum size that is dictated by arbitration, for this replica ack policy. The arbiter provider has the leeway to decide that the ack policy takes precedence, and that arbitration does not reduce the durabilty quorum size.

shouldEndArbitration

boolean shouldEndArbitration(ReplicationMutableConfig newConfig)

Return true if the environment configuration parameters specified in newConfig indicate that this node is not qualified to remain in active arbitration