Package org.apache.beam.runners.fnexecution.state

State API services.

Interface Summary

Interface	Description
StateDelegator	The StateDelegator is able to delegate BeamFnApi.StateRequests to a set of registered handlers.
StateDelegator.Registration	Allows callers to deregister from receiving further state requests.
StateRequestHandler	Handler for StateRequests.
StateRequestHandlers.BagUserStateHandler<K,V,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>	A handler for bag user state.
StateRequestHandlers.BagUserStateHandlerFactory<K,V,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>	A factory which constructs StateRequestHandlers.BagUserStateHandlers.
StateRequestHandlers.IterableSideInputHandler<V,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>	A handler for iterable side inputs.
StateRequestHandlers.MultimapSideInputHandler<K,V,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>	A handler for multimap side inputs.
StateRequestHandlers.SideInputHandler	Marker interface that denotes some type of side input handler.
StateRequestHandlers.SideInputHandlerFactory	A factory which constructs StateRequestHandlers.MultimapSideInputHandlers.

Class Summary

Class	Description
GrpcStateService	An implementation of the Beam Fn State service.
InMemoryBagUserStateFactory<K,V,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>	Holds user state in memory.
StateRequestHandlers	A set of utility methods which construct StateRequestHandlers.