Applies a simple 1-to-many mapping function over each element in the collection. The many elements are flattened into the resulting collection.
See BEAM-7702 for updates.
- Filter is useful if the function is just deciding whether to output an element or not.
- ParDo is the most general element-wise mapping operation, and includes other abilities such as multiple output collections and side-inputs.
Last updated on 2020/08/14
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