Flattening PCollections with different windowing

[azk]

Hello!

Thank you for sharing this library, I've learned from it quite a lot and used the same mechanics to implement a centralized error collection component in a pipeline I'm working on.

I was wondering how do you deal with applying the Flatten.pCollections() to PCollections that might have different windowing associated with them.
In order to overcome this issue in my code I had to re-window each PCollection before adding it to the PCollectionList which is ultimately flattened. I wonder if there is another way to go about that.

Thank you!
Amit.