org.apache.flink.streaming.api.runners.python.beam.state

类 BeamStateRequestHandler

java.lang.Object

org.apache.flink.streaming.api.runners.python.beam.state.BeamStateRequestHandler

所有已实现的接口:

org.apache.beam.runners.fnexecution.state.StateRequestHandler

public class BeamStateRequestHandler
extends Object
implements org.apache.beam.runners.fnexecution.state.StateRequestHandler

The handler for Beam state requests sent from Python side, which does actual operations on Flink state.

构造器概要

构造器

构造器和说明
BeamStateRequestHandler(BeamStateStore keyedStateStore, BeamStateStore operatorStateStore, BeamStateHandler<org.apache.flink.api.common.state.ListState<byte[]>> bagStateHandler, BeamStateHandler<org.apache.flink.api.common.state.MapState<ByteArrayWrapper,byte[]>> mapStateHandler)

方法概要

限定符和类型	方法和说明
Iterable<org.apache.beam.model.fnexecution.v1.BeamFnApi.ProcessBundleRequest.CacheToken>	getCacheTokens()
CompletionStage<org.apache.beam.model.fnexecution.v1.BeamFnApi.StateResponse.Builder>	handle(org.apache.beam.model.fnexecution.v1.BeamFnApi.StateRequest request)
static BeamStateRequestHandler	of(org.apache.flink.runtime.state.KeyedStateBackend<?> keyedStateBackend, org.apache.flink.runtime.state.OperatorStateBackend operatorStateBackend, org.apache.flink.api.common.typeutils.TypeSerializer<?> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<?> namespaceSerializer, org.apache.flink.configuration.ReadableConfig config) Create a BeamStateRequestHandler.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.beam.runners.fnexecution.state.StateRequestHandler

unsupported

构造器详细资料

BeamStateRequestHandler

public BeamStateRequestHandler(BeamStateStore keyedStateStore,
                               BeamStateStore operatorStateStore,
                               BeamStateHandler<org.apache.flink.api.common.state.ListState<byte[]>> bagStateHandler,
                               BeamStateHandler<org.apache.flink.api.common.state.MapState<ByteArrayWrapper,byte[]>> mapStateHandler)

方法详细资料

handle

public CompletionStage<org.apache.beam.model.fnexecution.v1.BeamFnApi.StateResponse.Builder> handle(org.apache.beam.model.fnexecution.v1.BeamFnApi.StateRequest request)
                                                                                             throws Exception

指定者:

handle 在接口中 org.apache.beam.runners.fnexecution.state.StateRequestHandler

抛出:

Exception

getCacheTokens

public Iterable<org.apache.beam.model.fnexecution.v1.BeamFnApi.ProcessBundleRequest.CacheToken> getCacheTokens()

指定者:

getCacheTokens 在接口中 org.apache.beam.runners.fnexecution.state.StateRequestHandler

of

public static BeamStateRequestHandler of(@Nullable
                                         org.apache.flink.runtime.state.KeyedStateBackend<?> keyedStateBackend,
                                         @Nullable
                                         org.apache.flink.runtime.state.OperatorStateBackend operatorStateBackend,
                                         @Nullable
                                         org.apache.flink.api.common.typeutils.TypeSerializer<?> keySerializer,
                                         @Nullable
                                         org.apache.flink.api.common.typeutils.TypeSerializer<?> namespaceSerializer,
                                         org.apache.flink.configuration.ReadableConfig config)

Create a BeamStateRequestHandler.

参数:

keyedStateBackend - if null, BeamStateRequestHandler would throw an error when receive keyed-state requests.

operatorStateBackend - if null, BeamStateRequestHandler would throw an error when receive operator-state requests.

keySerializer - key serializer for KeyedStateBackend, must not be null if keyedStatedBackend is not null.

namespaceSerializer - namespace serializer for KeyedStateBackend, could be null when there's no window logic involved.

config - state-related configurations

返回:

A new BeamBagStateHandler