Package org.apache.flink.streaming.api.operators.collect

Class CollectSinkOperator<IN>

java.lang.Object

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

org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator<Object,SinkFunction<IN>>

org.apache.flink.streaming.api.operators.StreamSink<IN>

org.apache.flink.streaming.api.operators.collect.CollectSinkOperator<IN>

Type Parameters:

IN - type of results to be written into the sink.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, OperatorEventHandler, Input<IN>, KeyContext, KeyContextHandler, OneInputStreamOperator<IN,Object>, org.apache.flink.streaming.api.operators.OutputTypeConfigurable<Object>, StreamOperator<Object>, StreamOperatorStateHandler.CheckpointedStreamOperator, UserFunctionProvider<SinkFunction<IN>>, YieldingOperator<Object>

public class CollectSinkOperator<IN>
extends StreamSink<IN>
implements OperatorEventHandler

A StreamSink that collects query results and sends them back to the client.

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

combinedWatermark, config, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, stateKeySelector1, stateKeySelector2, timeServiceManager

Constructor Summary

Constructors

Constructor	Description
CollectSinkOperator(org.apache.flink.api.common.typeutils.TypeSerializer<IN> serializer, long maxBytesPerBatch, String accumulatorName)

Method Summary

Modifier and Type	Method	Description
void	close()	This method is called at the very end of the operator's life, both in the case of a successful completion of the operation, and in the case of a failure and canceling.
void	handleOperatorEvent(OperatorEvent evt)

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

open, processElement, processWatermark, reportOrForwardLatencyMarker

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

finish, getUserFunction, getUserFunctionParameters, initializeState, notifyCheckpointAborted, notifyCheckpointComplete, setOutputType, setup, snapshotState

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

beforeInitializeStateHandler, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, isAsyncStateProcessingEnabled, isUsingCustomRawKeyedState, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark, processWatermark1, processWatermark1, processWatermark2, processWatermark2, processWatermarkStatus, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setMailboxExecutor, setProcessingTimeService, snapshotState, useSplittableTimers

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.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

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

processLatencyMarker, processRecordAttributes, processWatermark, processWatermarkStatus

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

getCurrentKey, setCurrentKey

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

hasKeyContext

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

setKeyContextElement

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

finish, getMetricGroup, getOperatorAttributes, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Constructor Details

CollectSinkOperator

public CollectSinkOperator(org.apache.flink.api.common.typeutils.TypeSerializer<IN> serializer,
 long maxBytesPerBatch,
 String accumulatorName)

Method Details

handleOperatorEvent

public void handleOperatorEvent(OperatorEvent evt)

Specified by:

handleOperatorEvent in interface OperatorEventHandler

close

public void close()
           throws Exception

Description copied from interface: StreamOperator

This method is called at the very end of the operator's life, both in the case of a successful completion of the operation, and in the case of a failure and canceling.

This method is expected to make a thorough effort to release all resources that the operator has acquired.

NOTE:It can not emit any records! If you need to emit records at the end of processing, do so in the StreamOperator.finish() method.

Specified by:

close in interface StreamOperator<IN>

Overrides:

close in class AbstractUdfStreamOperator<Object,SinkFunction<IN>>

Throws:

Exception