[GitHub] [flink] haf commented on issue #6594: [FLINK-9311] [pubsub] Added PubSub source connector with support for checkpointing (ATLEAST_ONCE)

[GitBox]

haf commented on issue #6594: [FLINK-9311] [pubsub] Added PubSub source 
connector with support for checkpointing (ATLEAST_ONCE)
URL: https://github.com/apache/flink/pull/6594#issuecomment-488227037
 
 
   @xeli I'm getting pretty bad throughput from the source; about 20 messages 
per second with a lot of expired messages (200/s):
   
   <img width="1389" alt="image" 
src="https://user-images.githubusercontent.com/193115/56998726-b531d680-6bac-11e9-88ea-fd73387e3d95.png";>
   
   Any ideas why? I checked the "backpressure" tab in Flink's UI and can't see 
anything indicative of a problem there. I'm running outside the cloud on my own 
laptop with incremental snapshots to Google Cloud Storage.
   
   This is what it looks like after running all night:
   
   <img width="633" alt="Screenshot 2019-05-01 at 09 29 36" 
src="https://user-images.githubusercontent.com/193115/57008932-ceaa4100-6bf3-11e9-879b-9c3303ca61b5.png";>
   

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