vmarchaud commented on issue #6556:
URL: 
https://github.com/apache/incubator-pinot/issues/6556#issuecomment-775439544


   > Does pubsub partition the stream, or is it all in one partition
   
   Yeah it's pretty much only one partition, at least from all the doc i read 
about it. However you can totally throw multiple workers on the same 
"partition" because the system will only allow to pull messages on one worker 
that hasn't picked pulled by another (of course it might re-deliver if a worker 
miss what they call a "ack deadline" which is around ~15s). 
   
   I guess the model is fondamentaly different, kafka and generally other 
pubsub will expose more logic to the consumer side where as GCP's pubsub will 
handle pretty much everything itself.


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