Package org.apache.hadoop.ha

Interface Summary

Interface	Description
FenceMethod	A fencing method is a method by which one node can forcibly prevent another node from making continued progress.
HAServiceProtocol	Protocol interface that provides High Availability related primitives to monitor and fail-over the service.

Class Summary

Class	Description
HAServiceProtocolHelper	Helper for making HAServiceProtocol RPC calls.
HAServiceTarget	Represents a target of the client side HA administration commands.

Exception Summary

Exception	Description
BadFencingConfigurationException	Indicates that the operator has specified an invalid configuration for fencing methods.
FailoverFailedException	Exception thrown to indicate service failover has failed.
HealthCheckFailedException	Exception thrown to indicate that health check of a service failed.
ServiceFailedException	Exception thrown to indicate that an operation performed to modify the state of a service or application failed.