org.apache.hadoop.ha
Interfaces 
ActiveStandbyElector.ActiveStandbyElectorCallback
FenceMethod
HAServiceProtocol
Classes 
HAServiceProtocol.StateChangeRequestInfo
HAServiceProtocolHelper
HAServiceTarget
ShellCommandFencer
SshFenceByTcpPort
Enums 
HAServiceProtocol.HAServiceState
HAServiceProtocol.RequestSource
Exceptions 
ActiveStandbyElector.ActiveNotFoundException
BadFencingConfigurationException
FailoverFailedException
HealthCheckFailedException
ServiceFailedException