DanielCarter-stack commented on issue #10391:
URL: https://github.com/apache/seatunnel/issues/10391#issuecomment-3795844127

   <!-- code-pr-reviewer -->
   Based on the source code analysis, TDengine Source connector only supports 
**batch mode**, not streaming:
   
   - `TDengineSource.java:82-84` returns `Boundedness.BOUNDED`, meaning it 
reads data once and finishes
   - Official docs (`docs/en/connectors/source/TDengine.md`) confirm this: 
stream feature is unchecked
   - `scan_interval`, `start_mode`, and `timestamp_column` are **not valid** 
TDengine connector options (see `TDengineSourceOptions.java`)
   
   To achieve continuous incremental sync, you can:
   - Use an external scheduler (Airflow/DolphinScheduler) to run batch jobs 
periodically with updated `lower_bound`/`upper_bound`
   - Leverage TDengine's subscription feature with other streaming tools
   
   Regarding InfluxDB: it also **does not support streaming** 
(`InfluxDBSource.java:70-72` returns `BOUNDED`).
   
   For true streaming CDC, consider connectors like MySQL CDC or Postgres CDC 
instead.


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