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

Class MailboxWatermarkProcessor<OUT>

java.lang.Object

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

@Internal
public class MailboxWatermarkProcessor<OUT>
extends Object

A helper class to let operators emit watermarks incrementally from mailbox. Instead of emitting all the watermarks at once in a single processWatermark call, if a mail in mailbox is present, the process of firing timers is interrupted and a continuation to finish it off later is scheduled via a mailbox mail.

Note that interrupting firing timers can change order of some invocations. It is possible that between firing timers, some records might be processed.

Field Summary

Fields

Modifier and Type	Field	Description
protected static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
MailboxWatermarkProcessor(Output<StreamRecord<OUT>> output, org.apache.flink.api.common.operators.MailboxExecutor mailboxExecutor, InternalTimeServiceManager<?> internalTimeServiceManager)

Method Summary

Modifier and Type	Method	Description
void	emitWatermarkInsideMailbox(Watermark mark)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

MailboxWatermarkProcessor

public MailboxWatermarkProcessor(Output<StreamRecord<OUT>> output,
                                 org.apache.flink.api.common.operators.MailboxExecutor mailboxExecutor,
                                 InternalTimeServiceManager<?> internalTimeServiceManager)

Method Detail

emitWatermarkInsideMailbox

public void emitWatermarkInsideMailbox(Watermark mark)
                                throws Exception

Throws:

Exception