sharan-malyala opened a new issue, #35111:
URL: https://github.com/apache/beam/issues/35111
### What would you like to happen?
A sample pipeline that reads from PubSub and writes to Json files using
WriteToJson transform runs slow, limited by parallelism.
```pipeline:
type: chain
transforms:
- type: ReadFromPubSub
config:
topic: projects/pubsub-public-data/topics/taxirides-realtime
format: json
schema:
type: object
properties:
ride_id: {type: string}
- type: WriteToJson
config:
path: "gs://bucket/json/out.json"
num_shards: 100
windowing:
type: fixed
size: 30s
options:
streaming: true```
### Issue Priority
Priority: 2 (default / most feature requests should be filed as P2)
### Issue Components
- [x] Component: Python SDK
- [ ] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [x] Component: Beam YAML
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Infrastructure
- [ ] 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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