[BEAM-6788] Inject PCollectionID to ElementCount metric in Python SDK

• Type: New Feature
• Status: Resolved
• Priority: P2
• Resolution: Implemented
• Fix Version/s: Not applicable
• Component/s: sdk-py-harness
• Assignee: Mikhail Gryzykhin
• Reporter: Mikhail Gryzykhin
• Created: 08/Mar/19 21:33
• Updated: 16/May/20 13:59
• Resolved: 12/Mar/19 23:16

Description

Updated [fn_api_proto](https://github.com/apache/beam/blob/7206b9b758ea6e17d73f203c59634930f57915c9/model/pipeline/src/main/proto/metrics.proto#L72) passes PCollectionID, not PTransfrom+OutputID to identify PCollection for ElementCount metric.

Issue Links

• links to: GitHub Pull Request #7942