[BEAM-3758] Migrate Python SDK Read transform to be Impulse->SDF

• Type: Sub-task
• Status: Resolved
• Priority: P2
• Resolution: Works for Me
• Fix Version/s: Not applicable
• Component/s: sdk-py-core
• Assignee: Robert Bradshaw
• Reporter: Kenneth Knowles
• Created: 27/Feb/18 23:43
• Updated: 16/May/20 14:10
• Resolved: 22/Apr/20 20:50

Description

Currently, Read is the "primitive" even though portability doesn't even have the concept. Anyhow at least the DataflowRunner should override it to be impulse, since the service requires this.

Issue Links

• links to: Github PR #7281