[BEAM-1709] Implement Single-output ParDo as Multi-output ParDo

• Type: Bug
• Status: Resolved
• Priority: P3
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: runner-core
• Labels: starter
• Assignee: Thomas Groh
• Reporter: Thomas Groh
• Created: 13/Mar/17 21:39
• Updated: 16/May/20 13:22
• Resolved: 17/Mar/17 16:55

Description

Runners who want a primitive Single-output ParDo should implement an override to do so.

Initially implemented in https://github.com/apache/beam/pull/2145, rolled back in https://github.com/apache/beam/pull/2170

Issue Links

• is related to: BEAM-1737 Implement a Single-output ParDo as a Multi-output ParDo with a single output
• supercedes: BEAM-1495 Move ParDo.Bound as ParDo.BoundMulti into the core runners construction module
• links to: GitHub Pull Request #2248