com.bigdata.quorum

Interface QuorumListener

All Known Subinterfaces:

QuorumClient<S>, QuorumMember<S>, QuorumService<S>

All Known Implementing Classes:

AbstractHostLBSPolicy, AbstractLBSPolicy, AbstractQuorumClient, AbstractQuorumMember, CountersLBSPolicy, FutureTaskInvariantMon, GangliaLBSPolicy, MockQuorumFixture.MockQuorum.MockQuorumWatcher, NOPLBSPolicy, QuorumServiceBase, RoundRobinLBSPolicy

public interface QuorumListener

An interface for receiving informational quorum events. These events are intended for clients interested in quorum state changes. Services that are HA aware use a more intimate API to handle the state changes.

Version:

$Id$

Author:

Bryan Thompson

Method Summary

Methods

Modifier and Type	Method and Description
void	notify(QuorumEvent e) Notify the client of a quorum event.

Method Detail

notify

void notify(QuorumEvent e)

Notify the client of a quorum event.

The listener MUST NOT take any event that could block. In particular, it MUST NOT wait on another thread that will access the Quorum as that will cause a deadlock around the internal lock maintained by the Quorum.