spotify/scio

Reservoir sampling into a side output?

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#1.321 geöffnet am 23.08.2018

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enhancementgood first issue

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Beschreibung

Right now we have SCollection#sample which uses a Beam transform and is implemented as a global combine operation. It'll be nice to have a sample into side output variation that passes main input through while randomly reservoir sample them into a side input. We should also benchmark this approach against the Beam implementation.

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