Uses of Package
org.apache.hadoop.ha

Packages that use org.apache.hadoop.ha

Package	Description
org.apache.hadoop.ha
org.apache.hadoop.ha.protocolPB
org.apache.hadoop.hdfs.server.namenode
org.apache.hadoop.hdfs.server.namenode.ha
org.apache.hadoop.hdfs.server.protocol
org.apache.hadoop.hdfs.tools

Classes in org.apache.hadoop.ha used by org.apache.hadoop.ha

Class and Description
ActiveStandbyElector.ActiveNotFoundException Exception thrown when there is no active leader
ActiveStandbyElector.ActiveStandbyElectorCallback Callback interface to interact with the ActiveStandbyElector object.
BadFencingConfigurationException Indicates that the operator has specified an invalid configuration for fencing methods.
FailoverFailedException Exception thrown to indicate service failover has failed.
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.
HAServiceProtocol.HAServiceState An HA service may be in active or standby state.
HAServiceProtocol.RequestSource
HAServiceProtocol.StateChangeRequestInfo Information describing the source for a request to change state.
HAServiceStatus
HAServiceTarget Represents a target of the client side HA administration commands.
HealthCheckFailedException Exception thrown to indicate that health check of a service failed.
HealthMonitor.State
NodeFencer This class parses the configured list of fencing methods, and is responsible for trying each one in turn while logging informative output.
ServiceFailedException Exception thrown to indicate that an operation performed to modify the state of a service or application failed.
ZKFCProtocol Protocol exposed by the ZKFailoverController, allowing for graceful failover.
ZKFCRpcServer

Classes in org.apache.hadoop.ha used by org.apache.hadoop.ha.protocolPB

Class and Description
HAServiceProtocol Protocol interface that provides High Availability related primitives to monitor and fail-over the service.
HAServiceProtocol.StateChangeRequestInfo Information describing the source for a request to change state.
HAServiceStatus
ZKFCProtocol Protocol exposed by the ZKFailoverController, allowing for graceful failover.

Classes in org.apache.hadoop.ha used by org.apache.hadoop.hdfs.server.namenode

Class and Description
ServiceFailedException Exception thrown to indicate that an operation performed to modify the state of a service or application failed.

Classes in org.apache.hadoop.ha used by org.apache.hadoop.hdfs.server.namenode.ha

Class and Description
HAServiceProtocol.HAServiceState An HA service may be in active or standby state.
ServiceFailedException Exception thrown to indicate that an operation performed to modify the state of a service or application failed.

Classes in org.apache.hadoop.ha used by org.apache.hadoop.hdfs.server.protocol

Class and Description
HAServiceProtocol Protocol interface that provides High Availability related primitives to monitor and fail-over the service.
HAServiceProtocol.HAServiceState An HA service may be in active or standby state.

Classes in org.apache.hadoop.ha used by org.apache.hadoop.hdfs.tools

Class and Description
BadFencingConfigurationException Indicates that the operator has specified an invalid configuration for fencing methods.
HAAdmin A command-line tool for making calls in the HAServiceProtocol.
HAServiceTarget Represents a target of the client side HA administration commands.
NodeFencer This class parses the configured list of fencing methods, and is responsible for trying each one in turn while logging informative output.
ZKFailoverController