Package org.apache.flink.runtime.operators.coordination

Interface Summary

Interface	Description
CoordinationRequest	Root interface for all requests from the client to a OperatorCoordinator which requests for a CoordinationResponse.
CoordinationRequestGateway	Client interface which sends out a CoordinationRequest and expects for a CoordinationResponse from a OperatorCoordinator.
CoordinationRequestHandler	Coordinator interface which can handle CoordinationRequests and response with CoordinationResponses to the client or operator.
CoordinationResponse	Root interface for all responses from a OperatorCoordinator to the client which is the response for a CoordinationRequest.
CoordinatorStore	CoordinatorStore can be used for sharing some information among OperatorCoordinator instances.
OperatorCoordinator	A coordinator for runtime operators.
OperatorCoordinator.Context	The context gives the OperatorCoordinator access to contextual information and provides a gateway to interact with other components, such as sending operator events.
OperatorCoordinator.Provider	The provider creates an OperatorCoordinator and takes a OperatorCoordinator.Context to pass to the OperatorCoordinator.
OperatorCoordinator.SubtaskGateway	The SubtaskGateway is the way to interact with a specific parallel instance of the Operator (an Operator subtask), like sending events to the operator.
OperatorEvent	Root interface for all events sent between OperatorCoordinator and an OperatorEventHandler.
OperatorEventDispatcher	The dispatcher through which Operators receive OperatorEvents and through which they can send OperatorEvents back to the OperatorCoordinator.
OperatorEventGateway	The gateway through which an Operator can send an OperatorEvent to the OperatorCoordinator on the JobManager side.
OperatorEventHandler	Interface for handlers of operator events on the operator side.
OperatorInfo	An interface to access basic properties of an operator in the context of its coordinator.

Class Summary

Class	Description
AcknowledgeCheckpointEvent	An OperatorEvent sent from a subtask to its OperatorCoordinator to signal that the checkpoint of an individual task is completed.
ComponentClosingUtils	A util class to help with a clean component shutdown.
CoordinatorStoreImpl	Basic implementation of CoordinatorStore.
OperatorCoordinatorHolder	The OperatorCoordinatorHolder holds the OperatorCoordinator and manages all its interactions with the remaining components.
RecreateOnResetOperatorCoordinator	A class that will recreate a new OperatorCoordinator instance when reset to checkpoint.
RecreateOnResetOperatorCoordinator.Provider	The provider for a private RecreateOnResetOperatorCoordinator.

Exception Summary

Exception	Description
TaskNotRunningException	An exception indicating that a target task is not running.