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Apache Flink offers rich sources of API and operators which makes Flink application developers productive in terms of dealing with the** multiple data streams**. Flink provides many multi streams operations like Union, Join, and so on. In this blog, we will explore the Window Join operator in Flink with an example. It joins two data streams on a given key and a common window.

Let say we have one stream which contains salary information of all the individual who belongs to an organization. The salary information has the id, name, and salary of an individual. This stream is available at port 9000 on the localhost.

#apache flink #big data and fast data #flink #java ##apache flink #big #big data analytics #fast data analytics #flink streaming #joins #streaming #streaming analytics