FlattenWith

Pydoc

Merges multiple PCollection objects into a single logical PCollection. It allows for the combination of both root PCollection-producing transforms (like Create and Read) and existing PCollections.

See more information in the Beam Programming Guide.

Examples

Related transforms

• Flatten merges multiple PCollection objects into a single logical PCollection. This is useful when dealing with multiple collections of the same data type.
• FlatMap applies a simple 1-to-many mapping function over each element in the collection. This transform might produce zero or more outputs.