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As the first sub-FLIP for DataStream API V2, we'd like to discuss and try to answer some of the most fundamental questions in stream processing.

- What kinds of data streams do we have?

- How to partition data over the streams?

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  • What kinds of data streams do we have?
  • How to partition data over the streams?
  • How to define a processing on the data stream?

The answer to these questions involve three core concepts: DataStream, Partitioning and ProcessFunction. In this FLIP, we will discuss the definitions and related API primitives of these concepts in detail.

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