Hi, maverick. The watermark is used to determine the message is late or early. If we only use the watermark on versioned table side, we have no means to determine whether the event in the main stream is ready to emit.
Best, Shengkai maverick <mac...@brynski.pl> 于2021年4月26日周一 上午2:31写道： > Hi, > I'm curious why Event Time Temporal Join needs watermarks from both sides > to > perform join. > > Shouldn't watermark on versioned table side be enough to perform join ? > > > > > > -- > Sent from: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/ >
