Hi! I was trying to understand the behavior of StartBundle and FinishBundle w.r.t. DoFns. I have an unbounded data source and I am trying to leverage bundling to achieve batching. >From the docs of ParDo:
"when a ParDo transform is executed, the elements of the input PCollection are first divided up into some number of "bundles" I would like to know if bundling is possible for unbounded data in the first place. If it is then how do I control the bundle size i.e. number of elements of a given PCollection in that bundle?
