[BEAM-38] Reuse DoFns across multiple bundles rather than deserializing per-bundle

• Type: Improvement
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 0.2.0-incubating
• Component/s: beam-model
• Labels: backward-incompatible
• Assignee: Thomas Groh
• Reporter: Kenneth Knowles
• Created: 19/Feb/16 22:57
• Updated: 24/Jul/20 20:56
• Resolved: 20/Oct/16 18:28

Description

Alluded to in our technical vision, we wish to remove at least some guarantees about when a fresh DoFn instance is created. Repeated deserialization can become a major cost when bundles are very small, as in some streaming pipelines.

Issue Links

• links to: GitHub Pull Request #419
• links to: GitHub Pull Request #429