org.apache.flink.state.changelog.restore

类 FunctionDelegationHelper

java.lang.Object

org.apache.flink.state.changelog.restore.FunctionDelegationHelper

@Internal
public class FunctionDelegationHelper
extends Object

Delegating functions are used to create metadata on recovery when the actual function code is not known yet. Once the actual function is known, backend updates the delegate which starts receiving the calls.

构造器概要

构造器

构造器和说明
FunctionDelegationHelper()

方法概要

限定符和类型	方法和说明
<T,S extends org.apache.flink.api.common.state.State,F> void	addOrUpdate(org.apache.flink.api.common.state.StateDescriptor<S,T> stateDescriptor)
static <IN,ACC,OUT> org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT>	delegateAggregateFunction()
static <T> org.apache.flink.api.common.functions.ReduceFunction<T>	delegateReduceFunction()

从类继承的方法 java.lang.Object

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

构造器详细资料

FunctionDelegationHelper

public FunctionDelegationHelper()

方法详细资料

delegateReduceFunction

public static <T> org.apache.flink.api.common.functions.ReduceFunction<T> delegateReduceFunction()

delegateAggregateFunction

public static <IN,ACC,OUT> org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT> delegateAggregateFunction()

addOrUpdate

public <T,S extends org.apache.flink.api.common.state.State,F> void addOrUpdate(org.apache.flink.api.common.state.StateDescriptor<S,T> stateDescriptor)