Scala Types in Scio Pipelines
Data pipelines in Apache Beam have a distinctly functional flavour, whichever language you use. That’s because they can be distributed over a cluster of machines, so careful management of state and side-effects is important.
Spotify’s Scio is an excellent Scala API for Beam. Scala’s functional ideas help to cut out much of the boilerplate present in the native Java API.
Scio makes good use of Scala’s tuple types, in particular pairs (x, y).
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