lostluck opened a new issue, #27038:
URL: https://github.com/apache/beam/issues/27038

   ### What happened?
   
   Because the Setup context is uncached 
(https://github.com/apache/beam/blob/833261f0a041e04ca4dcb8719424fda09edcc5e6/sdks/go/pkg/beam/core/runtime/exec/pardo.go#L104)
 metrics initialized in Setup are lost, which is unexpected. Work done in 
setup, while logically outside of a bundle, will be under the context of the 
first bundle to execute that transform.
   
   So there needs to be a way to transfer/extract the metrics from the Setup 
context so they are recorded back to the runner.
   
   ### Issue Priority
   
   Priority: 3 (minor)
   
   ### Issue Components
   
   - [ ] Component: Python SDK
   - [ ] Component: Java SDK
   - [X] Component: Go SDK
   - [ ] Component: Typescript SDK
   - [ ] Component: IO connector
   - [ ] Component: Beam examples
   - [ ] Component: Beam playground
   - [ ] Component: Beam katas
   - [ ] Component: Website
   - [ ] Component: Spark Runner
   - [ ] Component: Flink Runner
   - [ ] Component: Samza Runner
   - [ ] Component: Twister2 Runner
   - [ ] Component: Hazelcast Jet Runner
   - [ ] Component: Google Cloud Dataflow Runner


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