JoinedStreams

JoinedStreams represents two DataStreams that have been joined. A streaming join operation is evaluated over elements in a window.

To finalize the join operation you also need to specify a KeySelector for both the first and second input and a WindowAssigner

Note: Right now, the groups are being built in memory so you need to ensure that they don't get too big. Otherwise the JVM might crash.

Example:

val one: DataStream[(String, Int)]  = ...
val two: DataStream[(String, Int)] = ...

val result = one.join(two)
   .where {t => ... }
   .equal {t => ... }
   .window(TumblingEventTimeWindows.of(Time.of(5, TimeUnit.SECONDS)))
   .apply(new MyJoinFunction())
}