Package org.apache.flink.runtime.asyncprocessing

Class StateExecutionController<K>

java.lang.Object

org.apache.flink.runtime.asyncprocessing.AsyncExecutionController<K,StateRequest<?,?,?,?>>

org.apache.flink.runtime.asyncprocessing.StateExecutionController<K>

All Implemented Interfaces:

Closeable, AutoCloseable, StateRequestHandler

public class StateExecutionController<K>
extends AsyncExecutionController<K,StateRequest<?,?,?,?>>
implements StateRequestHandler

The StateExecutionController is responsible for handling StateRequests. It extends AsyncExecutionController and implements StateRequestHandler.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.runtime.asyncprocessing.AsyncExecutionController

AsyncExecutionController.SwitchContextListener<K>

Constructor Summary

Constructors

Constructor

Description

StateExecutionController(org.apache.flink.api.common.operators.MailboxExecutor mailboxExecutor, org.apache.flink.core.asyncprocessing.AsyncFutureImpl.AsyncFrameworkExceptionHandler exceptionHandler, AsyncExecutor<StateRequest<?,?,?,?>> stateExecutor, DeclarationManager declarationManager, EpochManager.ParallelMode epochParallelMode, int maxParallelism, int batchSize, long bufferTimeout, int maxInFlightRecords, AsyncExecutionController.SwitchContextListener<K> switchContextListener, org.apache.flink.metrics.MetricGroup metricGroup)

Method Summary

Modifier and Type	Method	Description
<IN,OUT> org.apache.flink.core.asyncprocessing.InternalAsyncFuture<OUT>	handleRequest(org.apache.flink.api.common.state.v2.State state, StateRequestType type, boolean sync, IN payload, boolean allowOverdraft)	Submit a StateRequest to this AsyncExecutionController and trigger it if needed.
<IN,OUT> org.apache.flink.core.asyncprocessing.InternalAsyncFuture<OUT>	handleRequest(org.apache.flink.api.common.state.v2.State state, StateRequestType type, IN payload)	Submit a StateRequest to this AsyncExecutionController and trigger it if needed.
<IN,OUT> OUT	handleRequestSync(org.apache.flink.api.common.state.v2.State state, StateRequestType type, IN payload)	Submit a StateRequest to this StateRequestHandler, and wait for the response synchronously.
<N> void	setCurrentNamespaceForState(InternalPartitionedState<N> state, N namespace)	Set current namespace for a state.

Methods inherited from class org.apache.flink.runtime.asyncprocessing.AsyncExecutionController

buildContext, buildContext, close, drainInflightRecords, getAsyncExecutor, getCurrentContext, getInFlightRecordNum, getMailboxExecutor, handleRequest, processNonRecord, setCurrentContext, syncPointRequestWithCallback, triggerIfNeeded, waitUntil

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StateExecutionController

public StateExecutionController(org.apache.flink.api.common.operators.MailboxExecutor mailboxExecutor,
                                org.apache.flink.core.asyncprocessing.AsyncFutureImpl.AsyncFrameworkExceptionHandler exceptionHandler,
                                AsyncExecutor<StateRequest<?,?,?,?>> stateExecutor,
                                DeclarationManager declarationManager,
                                EpochManager.ParallelMode epochParallelMode,
                                int maxParallelism,
                                int batchSize,
                                long bufferTimeout,
                                int maxInFlightRecords,
                                @Nullable
                                AsyncExecutionController.SwitchContextListener<K> switchContextListener,
                                @Nullable
                                org.apache.flink.metrics.MetricGroup metricGroup)

Method Detail

handleRequest

public <IN,OUT> org.apache.flink.core.asyncprocessing.InternalAsyncFuture<OUT> handleRequest(@Nullable
                                                                                                   org.apache.flink.api.common.state.v2.State state,
                                                                                                   StateRequestType type,
                                                                                                   @Nullable
                                                                                                   IN payload)

Submit a StateRequest to this AsyncExecutionController and trigger it if needed.

Specified by:

handleRequest in interface StateRequestHandler

Parameters:

state - the state to request.

type - the type of this request.

payload - the payload input for this request.

Returns:

the state future.

handleRequest

public <IN,OUT> org.apache.flink.core.asyncprocessing.InternalAsyncFuture<OUT> handleRequest(@Nullable
                                                                                                   org.apache.flink.api.common.state.v2.State state,
                                                                                                   StateRequestType type,
                                                                                                   boolean sync,
                                                                                                   @Nullable
                                                                                                   IN payload,
                                                                                                   boolean allowOverdraft)

Submit a StateRequest to this AsyncExecutionController and trigger it if needed.

Parameters:

state - the state to request.

type - the type of this request.

sync - whether to trigger the request synchronously once it's ready.

payload - the payload input for this request.

allowOverdraft - whether to allow overdraft.

Returns:

the state future.

handleRequestSync

public <IN,OUT> OUT handleRequestSync(org.apache.flink.api.common.state.v2.State state,
                                            StateRequestType type,
                                            @Nullable
                                            IN payload)

Description copied from interface: StateRequestHandler

Submit a StateRequest to this StateRequestHandler, and wait for the response synchronously.

Specified by:

handleRequestSync in interface StateRequestHandler

Parameters:

state - the state to request.

type - the type of this request.

payload - the payload input for this request.

Returns:

the state future.

setCurrentNamespaceForState

public <N> void setCurrentNamespaceForState(@Nonnull
                                            InternalPartitionedState<N> state,
                                            N namespace)

Description copied from interface: StateRequestHandler

Set current namespace for a state. See InternalPartitionedState.setCurrentNamespace(Object).

Specified by:

setCurrentNamespaceForState in interface StateRequestHandler