Package org.apache.flink.table.runtime.operators.window.tvf.operator

Class UnalignedWindowTableFunctionOperator

java.lang.Object

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

org.apache.flink.table.runtime.operators.TableStreamOperator<RowData>

org.apache.flink.table.runtime.operators.window.tvf.operator.WindowTableFunctionOperatorBase

org.apache.flink.table.runtime.operators.window.tvf.operator.UnalignedWindowTableFunctionOperator

All Implemented Interfaces:

Serializable, CheckpointListener, Input<RowData>, KeyContext, KeyContextHandler, OneInputStreamOperator<RowData,RowData>, StreamOperator<RowData>, StreamOperatorStateHandler.CheckpointedStreamOperator, Triggerable<RowData,TimeWindow>, YieldingOperator<RowData>

public class UnalignedWindowTableFunctionOperator
extends WindowTableFunctionOperatorBase
implements Triggerable<RowData,TimeWindow>

The operator for unaligned window table function.

See more details about aligned window and unaligned window in WindowAggOperator.

Note: The operator only applies for Window TVF with set semantics (e.g SESSION) instead of row semantics (e.g TUMBLE/HOP/CUMULATE).

This operator emits result at the end of window instead of per record.

This operator will not compact changelog records.

This operator will keep the original order of input records when outputting.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

TableStreamOperator.ContextImpl

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.window.tvf.operator.WindowTableFunctionOperatorBase

numNullRowTimeRecordsDropped, rowtimeIndex, shiftTimeZone, windowAssigner

Fields inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

ctx, currentWatermark

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
UnalignedWindowTableFunctionOperator(GroupWindowAssigner<TimeWindow> windowAssigner, TypeSerializer<TimeWindow> windowSerializer, TypeSerializer<RowData> inputSerializer, int rowtimeIndex, ZoneId shiftTimeZone)

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.
Counter	getNumLateRecordsDropped()
Gauge<Long>	getWatermarkLatency()
void	onEventTime(InternalTimer<RowData,TimeWindow> timer)	Invoked when an event-time timer fires.
void	onProcessingTime(InternalTimer<RowData,TimeWindow> timer)	Invoked when a processing-time timer fires.
void	open()	This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g. state initialization.
void	processElement(StreamRecord<RowData> element)	Processes one element that arrived on this input of the MultipleInputStreamOperator.

Methods inherited from class org.apache.flink.table.runtime.operators.window.tvf.operator.WindowTableFunctionOperatorBase

collect, getNumNullRowTimeRecordsDropped

Methods inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

computeMemorySize, processWatermark, useSplittableTimers

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

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

UnalignedWindowTableFunctionOperator

public UnalignedWindowTableFunctionOperator(GroupWindowAssigner<TimeWindow> windowAssigner,
                                            TypeSerializer<TimeWindow> windowSerializer,
                                            TypeSerializer<RowData> inputSerializer,
                                            int rowtimeIndex,
                                            ZoneId shiftTimeZone)

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<RowData>

Overrides:

open in class WindowTableFunctionOperatorBase

Throws:

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

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<RowData>

Overrides:

close in class WindowTableFunctionOperatorBase

Throws:

Exception

processElement

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

Description copied from interface: Input

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

Specified by:

processElement in interface Input<RowData>

Throws:

Exception

onEventTime

public void onEventTime(InternalTimer<RowData,TimeWindow> timer)
                 throws Exception

Description copied from interface: Triggerable

Invoked when an event-time timer fires.

Specified by:

onEventTime in interface Triggerable<RowData,TimeWindow>

Throws:

Exception

onProcessingTime

public void onProcessingTime(InternalTimer<RowData,TimeWindow> timer)
                      throws Exception

Description copied from interface: Triggerable

Invoked when a processing-time timer fires.

Specified by:

onProcessingTime in interface Triggerable<RowData,TimeWindow>

Throws:

Exception

getNumLateRecordsDropped

@VisibleForTesting
public Counter getNumLateRecordsDropped()

getWatermarkLatency

@VisibleForTesting
public Gauge<Long> getWatermarkLatency()