org.apache.flink.state.api.output.operators

Class KeyedStateBootstrapOperator<K,IN>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<OUT>

org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator<TaggedOperatorSubtaskState,KeyedStateBootstrapFunction<K,IN>>

org.apache.flink.state.api.output.operators.KeyedStateBootstrapOperator<K,IN>

All Implemented Interfaces:

Serializable, CheckpointListener, BoundedOneInput, KeyContext, OneInputStreamOperator<IN,TaggedOperatorSubtaskState>, OutputTypeConfigurable<TaggedOperatorSubtaskState>, SetupableStreamOperator<TaggedOperatorSubtaskState>, StreamOperator<TaggedOperatorSubtaskState>, StreamOperatorStateHandler.CheckpointedStreamOperator, Disposable

@Internal
public class KeyedStateBootstrapOperator<K,IN>
extends AbstractUdfStreamOperator<TaggedOperatorSubtaskState,KeyedStateBootstrapFunction<K,IN>>
implements OneInputStreamOperator<IN,TaggedOperatorSubtaskState>, BoundedOneInput

A StreamOperator for executing KeyedStateBootstrapFunction's.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator

userFunction

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService

Constructor Summary

Constructors

Constructor and Description
KeyedStateBootstrapOperator(long timestamp, Path savepointPath, KeyedStateBootstrapFunction<K,IN> function)

Method Summary

Modifier and Type	Method and Description
void	endInput() It is notified that no more data will arrive on the input.
void	open() This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g.
void	processElement(StreamRecord<IN> element) Processes one element that arrived at this operator.

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator

close, dispose, getUserFunction, getUserFunctionParameters, initializeState, notifyCheckpointAborted, notifyCheckpointComplete, setOutputType, setup, snapshotState

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, initializeState, isUsingCustomRawKeyedState, numEventTimeTimers, numProcessingTimeTimers, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark, processWatermark1, processWatermark2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, snapshotState

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.OneInputStreamOperator

processLatencyMarker, processWatermark

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

close, dispose, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Methods inherited from interface org.apache.flink.runtime.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey, setCurrentKey

Constructor Detail

KeyedStateBootstrapOperator

public KeyedStateBootstrapOperator(long timestamp,
                                   Path savepointPath,
                                   KeyedStateBootstrapFunction<K,IN> function)

Method Detail

open

public void open()
          throws Exception

Description copied from class: AbstractStreamOperator

This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g. state initialization.

The default implementation does nothing.

Specified by:

open in interface StreamOperator<TaggedOperatorSubtaskState>

Overrides:

open in class AbstractUdfStreamOperator<TaggedOperatorSubtaskState,KeyedStateBootstrapFunction<K,IN>>

Throws:

Exception - An exception in this method causes the operator to fail.

processElement

public void processElement(StreamRecord<IN> element)
                    throws Exception

Description copied from interface: OneInputStreamOperator

Processes one element that arrived at this operator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processElement in interface OneInputStreamOperator<IN,TaggedOperatorSubtaskState>

Throws:

Exception

endInput

public void endInput()
              throws Exception

Description copied from interface: BoundedOneInput

It is notified that no more data will arrive on the input.

Specified by:

endInput in interface BoundedOneInput

Throws:

Exception