MyLanPangzi commented on pull request #14376:
URL: https://github.com/apache/flink/pull/14376#issuecomment-963942917


   @maosuhan hello,i am testing the format in production. 
   source : kafka 
   format: pb3
   field count: 200+
   nested: 1
   qps: 40k/s
   partition: 200
   parallelism: 100
   sink: hive
   
   i found the consumer rate can't caught up.
   
   my log:
   spent: ms
   
   deserialize after : 1636447966334, spent: 0, count 97438 total spent 12322
   deserialize after : 1636447966335, spent: 0, count 96905 total spent 12065
   deserialize after : 1636447966341, spent: 0, count 99242 total spent 12850
   deserialize after : 1636447966342, spent: 0, count 97439 total spent 12322
   deserialize after : 1636447966344, spent: 0, count 96906 total spent 12065
   
   


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