In June, I sent out a proposal <https://docs.google.com/document/d/1NExwHlj-2q2WUGhSO4jTu8XGhDPmm3cllSN8IMmWci8/edit> for a mechanism to drain running Beam pipelines, as part of an effort to formalize production operations for pipelines. I promised to also send out a proposal for snapshotting and performing in-place updates of pipelines, and here it is <https://docs.google.com/document/d/1UWhnYPgui0gUYOsuGcCjLuoOUlGA4QaY91n8p3wz9MY/edit#heading=h.59r3zscyjsm0>! Please take a look and leave comments. I think the combination of these features creates a powerful story for supportability and maintainability for Beam pipelines.
Reuven
