Package org.apache.flink.runtime.asyncprocessing

Interface Summary

Interface	Description
AsyncExecutionController.SwitchContextListener<K>	A listener listens the key context switch.
AsyncExecutor<REQUEST extends AsyncRequest<?>>	Executor for executing batch AsyncRequests.
AsyncRequestContainer<REQUEST extends AsyncRequest<?>>	A container which is used to hold AsyncRequests.
RecordContext.DisposerRunner
StateExecutor	Executor for executing batch StateRequests.
StateRequestHandler	The handler which can process StateRequest.

Class Summary

Class	Description
AbstractStateIterator<T>	A StateIterator implementation to facilitate async data load of iterator.
AsyncExecutionController<K,REQUEST extends AsyncRequest<?>>	The Async Execution Controller (AEC) receives processing requests from operators, and put them into execution according to some strategies.
AsyncFutureFactory<K>	An internal factory for InternalAsyncFuture that build future with necessary context switch and wired with mailbox executor.
AsyncRequest<K>
AsyncRequestBuffer<K>	A buffer to hold async requests to execute async requests in batch, which can only be manipulated within task thread.
CallbackRunnerWrapper	A AsyncFutureImpl.CallbackRunner that gives info of CallbackRunnerWrapper.isHasMail() to the AEC and notifies new mail if needed.
ContextAsyncFutureImpl<T>	A state future that holds the RecordContext and maintains the reference count of it.
EpochManager	Epoch manager segments inputs into distinct epochs, marked by the arrival of non-records(e.g.
EpochManager.Epoch	All inputs are segment into distinct epochs, marked by the arrival of non-record inputs.
KeyAccountingUnit<K>	Key accounting unit holds the current in-flight key and tracks the corresponding ongoing records, which is used to preserve the ordering of independent chained StateFuture.
RecordContext<K>	A context that preserves the necessary variables required by each operation, all operations for one record will share the same element context.
ReferenceCounted<ReleaseHelper>	An object that can be reference counted, the internal resource would be released when the reference count reaches zero.
SimpleAsyncExecutionController<K>	The SimpleAsyncExecutionController is responsible for handling simple runnable tasks.
SimpleAsyncExecutionController.RunnableTask<K,RET>
StateExecutionController<K>	The StateExecutionController is responsible for handling StateRequests.
StateRequest<K,N,IN,OUT>	A request encapsulates the necessary data to perform a state request.
SyncPointRequest<K>	The Sync point request that will be trigger callback once it is allowed to be triggered.

Enum Summary

Enum	Description
EpochManager.ParallelMode	This enum defines whether parallel execution between epochs is allowed.
StateRequestType	The type of processing request for State from **users' perspective**.

Exception Summary

Exception	Description
AsyncException	An exception for wrapping exceptions that are thrown by AsyncExecutionController.