Package org.apache.flink.streaming.runtime.watermark

Class BoolWatermarkCombiner

java.lang.Object

org.apache.flink.streaming.runtime.watermark.BoolWatermarkCombiner

All Implemented Interfaces:

WatermarkCombiner

public class BoolWatermarkCombiner
extends Object
implements WatermarkCombiner

A WatermarkCombiner for unaligned BoolWatermarks.

The combination process will perform the following steps: (1) determine if it satisfies the condition of WatermarkCombinationPolicy.isCombineWaitForAllChannels(), (2) calculate the combined watermark value, (3) send the combined watermark to downstream only when the value differs from the previous sent one or if it's the first time sending.

Constructor Summary

Constructors

Constructor	Description
BoolWatermarkCombiner(org.apache.flink.api.common.watermark.WatermarkCombinationPolicy combinationPolicy, int numberOfInputChannels)

Method Summary

Modifier and Type	Method	Description
void	combineWatermark(org.apache.flink.api.common.watermark.Watermark watermark, int channelIndex, Consumer<org.apache.flink.api.common.watermark.Watermark> watermarkEmitter)

Methods inherited from class java.lang.Object

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

Constructor Detail

BoolWatermarkCombiner

public BoolWatermarkCombiner(org.apache.flink.api.common.watermark.WatermarkCombinationPolicy combinationPolicy,
                             int numberOfInputChannels)

Method Detail

combineWatermark

public void combineWatermark(org.apache.flink.api.common.watermark.Watermark watermark,
                             int channelIndex,
                             Consumer<org.apache.flink.api.common.watermark.Watermark> watermarkEmitter)
                      throws Exception

Specified by:

combineWatermark in interface WatermarkCombiner

Throws:

Exception