org.apache.flink.streaming.api.operators.source

类 ProgressiveTimestampsAndWatermarks<T>

java.lang.Object

org.apache.flink.streaming.api.operators.source.ProgressiveTimestampsAndWatermarks<T>

类型参数:

T - The type of the emitted records.

所有已实现的接口:

TimestampsAndWatermarks<T>

@Internal
public class ProgressiveTimestampsAndWatermarks<T>
extends Object
implements TimestampsAndWatermarks<T>

An implementation of TimestampsAndWatermarks that does periodic watermark emission and keeps track of watermarks on a per-split basis. This should be used in execution contexts where watermarks are important for efficiency/correctness, for example in STREAMING execution mode.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.streaming.api.operators.source.TimestampsAndWatermarks

TimestampsAndWatermarks.WatermarkUpdateListener

构造器概要

构造器

构造器和说明
ProgressiveTimestampsAndWatermarks(org.apache.flink.api.common.eventtime.TimestampAssigner<T> timestampAssigner, org.apache.flink.api.common.eventtime.WatermarkGeneratorSupplier<T> watermarksFactory, org.apache.flink.api.common.eventtime.WatermarkGeneratorSupplier.Context watermarksContext, ProcessingTimeService timeService, java.time.Duration periodicWatermarkInterval)

方法概要

限定符和类型	方法和说明
org.apache.flink.api.connector.source.ReaderOutput<T>	createMainOutput(PushingAsyncDataInput.DataOutput<T> output, TimestampsAndWatermarks.WatermarkUpdateListener watermarkEmitted) Creates the ReaderOutput for the source reader, than internally runs the timestamp extraction and watermark generation.
void	startPeriodicWatermarkEmits() Starts emitting periodic watermarks, if this implementation produces watermarks, and if periodic watermarks are configured.
void	stopPeriodicWatermarkEmits() Stops emitting periodic watermarks.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.api.operators.source.TimestampsAndWatermarks

createNoOpEventTimeLogic, createProgressiveEventTimeLogic

构造器详细资料

ProgressiveTimestampsAndWatermarks

public ProgressiveTimestampsAndWatermarks(org.apache.flink.api.common.eventtime.TimestampAssigner<T> timestampAssigner,
                                          org.apache.flink.api.common.eventtime.WatermarkGeneratorSupplier<T> watermarksFactory,
                                          org.apache.flink.api.common.eventtime.WatermarkGeneratorSupplier.Context watermarksContext,
                                          ProcessingTimeService timeService,
                                          java.time.Duration periodicWatermarkInterval)

方法详细资料

createMainOutput

public org.apache.flink.api.connector.source.ReaderOutput<T> createMainOutput(PushingAsyncDataInput.DataOutput<T> output,
                                                                              TimestampsAndWatermarks.WatermarkUpdateListener watermarkEmitted)

从接口复制的说明: TimestampsAndWatermarks

Creates the ReaderOutput for the source reader, than internally runs the timestamp extraction and watermark generation.

指定者:

createMainOutput 在接口中 TimestampsAndWatermarks<T>

startPeriodicWatermarkEmits

public void startPeriodicWatermarkEmits()

从接口复制的说明: TimestampsAndWatermarks

Starts emitting periodic watermarks, if this implementation produces watermarks, and if periodic watermarks are configured.

Periodic watermarks are produced by periodically calling the WatermarkGenerator.onPeriodicEmit(WatermarkOutput) method of the underlying Watermark Generators.

指定者:

startPeriodicWatermarkEmits 在接口中 TimestampsAndWatermarks<T>

stopPeriodicWatermarkEmits

public void stopPeriodicWatermarkEmits()

从接口复制的说明: TimestampsAndWatermarks

Stops emitting periodic watermarks.

指定者:

stopPeriodicWatermarkEmits 在接口中 TimestampsAndWatermarks<T>