org.apache.flink.state.api.input

类 KeyedStateInputFormat<K,N,OUT>

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<OUT,KeyGroupRangeInputSplit>

org.apache.flink.state.api.input.KeyedStateInputFormat<K,N,OUT>

类型参数:

K - The type of the key.

OUT - The type of the output of the KeyedStateReaderFunction.

所有已实现的接口:

Serializable, org.apache.flink.api.common.io.InputFormat<OUT,KeyGroupRangeInputSplit>, org.apache.flink.core.io.InputSplitSource<KeyGroupRangeInputSplit>

@Internal
public class KeyedStateInputFormat<K,N,OUT>
extends org.apache.flink.api.common.io.RichInputFormat<OUT,KeyGroupRangeInputSplit>

Input format for reading partitioned state.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
KeyedStateInputFormat(org.apache.flink.runtime.checkpoint.OperatorState operatorState, org.apache.flink.runtime.state.StateBackend stateBackend, StateReaderOperator<?,K,N,OUT> operator) Creates an input format for reading partitioned state from an operator in a savepoint.

方法概要

限定符和类型	方法和说明
void	close()
void	configure(org.apache.flink.configuration.Configuration parameters)
KeyGroupRangeInputSplit[]	createInputSplits(int minNumSplits)
org.apache.flink.core.io.InputSplitAssigner	getInputSplitAssigner(KeyGroupRangeInputSplit[] inputSplits)
org.apache.flink.api.common.io.statistics.BaseStatistics	getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStatistics)
OUT	nextRecord(OUT reuse)
void	open(KeyGroupRangeInputSplit split)
void	openInputFormat()
boolean	reachedEnd()

从类继承的方法 org.apache.flink.api.common.io.RichInputFormat

closeInputFormat, getRuntimeContext, setRuntimeContext

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

KeyedStateInputFormat

public KeyedStateInputFormat(org.apache.flink.runtime.checkpoint.OperatorState operatorState,
                             org.apache.flink.runtime.state.StateBackend stateBackend,
                             StateReaderOperator<?,K,N,OUT> operator)

Creates an input format for reading partitioned state from an operator in a savepoint.

参数:

operatorState - The state to be queried.

stateBackend - The state backed used to snapshot the operator.

方法详细资料

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

getInputSplitAssigner

public org.apache.flink.core.io.InputSplitAssigner getInputSplitAssigner(KeyGroupRangeInputSplit[] inputSplits)

getStatistics

public org.apache.flink.api.common.io.statistics.BaseStatistics getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStatistics)

createInputSplits

public KeyGroupRangeInputSplit[] createInputSplits(int minNumSplits)
                                            throws IOException

抛出:

IOException

openInputFormat

public void openInputFormat()

覆盖:

openInputFormat 在类中 org.apache.flink.api.common.io.RichInputFormat<OUT,KeyGroupRangeInputSplit>

open

public void open(KeyGroupRangeInputSplit split)
          throws IOException

抛出:

IOException

close

public void close()
           throws IOException

抛出:

IOException

reachedEnd

public boolean reachedEnd()

nextRecord

public OUT nextRecord(OUT reuse)
               throws IOException

抛出:

IOException