Package org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors

Class AsyncStateSliceSharedWindowAggProcessor

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.window.processors.WindowAggProcessorBase<W,AsyncStateWindowProcessor.AsyncStateContext<W>>

org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateWindowAggProcessor<Long>

org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateSliceWindowAggProcessor

org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AsyncStateSliceSharedWindowAggProcessor

All Implemented Interfaces:

Serializable, AsyncMergeCallback<Long,Iterable<Long>>, AsyncStateWindowProcessor<Long>, AsyncStateSlicingWindowProcessor<Long>, WindowProcessor<Long,AsyncStateWindowProcessor.AsyncStateContext<Long>>

public final class AsyncStateSliceSharedWindowAggProcessor
extends AbstractAsyncStateSliceWindowAggProcessor
implements AsyncMergeCallback<Long,Iterable<Long>>

A window aggregate processor implementation which works for SliceSharedAssigner with async state api, e.g. hopping windows and cumulative windows.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateWindowAggProcessor

AbstractAsyncStateWindowAggProcessor.WindowIsEmptyChecker

Nested classes/interfaces inherited from interface org.apache.flink.table.runtime.operators.window.async.tvf.common.AsyncStateWindowProcessor

AsyncStateWindowProcessor.AsyncStateContext<W>

Nested classes/interfaces inherited from interface org.apache.flink.table.runtime.operators.window.tvf.common.WindowProcessor

WindowProcessor.Context<W>

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateSliceWindowAggProcessor

sliceAssigner, windowBuffer, windowBufferFactory, windowInterval

Fields inherited from class org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateWindowAggProcessor

emptyChecker, windowState

Fields inherited from class org.apache.flink.table.runtime.operators.aggregate.window.processors.WindowAggProcessorBase

accSerializer, aggregator, clockService, ctx, currentProgress, genAggsHandler, isEventTime, reuseOutput, shiftTimeZone, useDayLightSaving, windowTimerService

Constructor Summary

Constructors

Constructor	Description
AsyncStateSliceSharedWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler, AsyncStateWindowBuffer.Factory bufferFactory, SliceSharedAssigner sliceAssigner, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer, int indexOfCountStar, ZoneId shiftTimeZone)

Method Summary

Modifier and Type	Method	Description
org.apache.flink.api.common.state.v2.StateFuture<org.apache.flink.api.java.tuple.Tuple2<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>>	asyncMerge(Long mergeResult, Iterable<Long> toBeMerged, Long resultNamespace)	Specifies that states of the given windows or slices should be merged into the result window or slice.
org.apache.flink.api.common.state.v2.StateFuture<Void>	fireWindow(long timerTimestamp, Long windowEnd)	Emit results of the given window.
protected org.apache.flink.api.common.state.v2.StateFuture<Long>	sliceStateMergeTarget(long sliceToMerge)	Returns the slice state target to merge the given slice into when firing windows.

Methods inherited from class org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateSliceWindowAggProcessor

advanceProgress, clearWindow, close, createWindowSerializer, getWindowTimerService, open, prepareCheckpoint, processElement

Methods inherited from class org.apache.flink.table.runtime.operators.aggregate.asyncwindow.processors.AbstractAsyncStateWindowAggProcessor

prepareAggregator

Methods inherited from class org.apache.flink.table.runtime.operators.aggregate.window.processors.WindowAggProcessorBase

collect, initializeWatermark

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.table.runtime.operators.window.tvf.common.WindowProcessor

initializeWatermark

Constructor Details

AsyncStateSliceSharedWindowAggProcessor

public AsyncStateSliceSharedWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler,
 AsyncStateWindowBuffer.Factory bufferFactory,
 SliceSharedAssigner sliceAssigner,
 org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer,
 int indexOfCountStar,
 ZoneId shiftTimeZone)

Method Details

fireWindow

public org.apache.flink.api.common.state.v2.StateFuture<Void> fireWindow(long timerTimestamp,
 Long windowEnd)
                                                                  throws Exception

Description copied from interface: AsyncStateWindowProcessor

Emit results of the given window.

Note: the key context has been set.

Specified by:

fireWindow in interface AsyncStateWindowProcessor<Long>

Parameters:

timerTimestamp - the fired timestamp

windowEnd - the window to emit

Throws:

Exception

asyncMerge

public org.apache.flink.api.common.state.v2.StateFuture<org.apache.flink.api.java.tuple.Tuple2<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>> asyncMerge(@Nullable
 Long mergeResult,
 Iterable<Long> toBeMerged,
 Long resultNamespace)
                                                                                                                                                                             throws Exception

Description copied from interface: AsyncMergeCallback

Specifies that states of the given windows or slices should be merged into the result window or slice.

Specified by:

asyncMerge in interface AsyncMergeCallback<Long,Iterable<Long>>

Parameters:

mergeResult - The resulting merged window or slice, null if it represents a non-state namespace.

toBeMerged - Windows or slices that should be merged into one window or slice.

resultNamespace - The window or slice used as namespace to get the result from the merged accumulator.

Returns:

f0 is the accumulators after merging, f1 is the result of the aggregation from the merged accumulators with this slice end as namespace

Throws:

Exception

sliceStateMergeTarget

protected org.apache.flink.api.common.state.v2.StateFuture<Long> sliceStateMergeTarget(long sliceToMerge)
                                                                                throws Exception

Description copied from class: AbstractAsyncStateSliceWindowAggProcessor

Returns the slice state target to merge the given slice into when firing windows. For unshared windows, there should no merging happens, so the merge target should be just the given sliceToMerge. For shared windows, the merge target should be the shared slice state.

Specified by:

sliceStateMergeTarget in class AbstractAsyncStateSliceWindowAggProcessor

Throws:

Exception

See Also:

• SliceSharedAssigner.mergeSlices(long, MergeCallback)