[GitHub] [spark] cxzl25 commented on issue #24603: [SPARK-27706][SQL][WEBUI] Add SQL metrics of numOutputRows for BroadcastExchangeExec

Tue, 14 May 2019 08:14:12 -0700 

cxzl25 commented on issue #24603: [SPARK-27706][SQL][WEBUI] Add SQL metrics of 
numOutputRows for BroadcastExchangeExec
URL: https://github.com/apache/spark/pull/24603#issuecomment-492281224
 
 
   Current UI
   
![image](https://user-images.githubusercontent.com/3898450/57709187-3012eb00-769d-11e9-8ffc-8b15b433d53f.png)
   
   Add SQL metrics of numOutputRows
   
![image](https://user-images.githubusercontent.com/3898450/57709305-56388b00-769d-11e9-98a4-866939bbf585.png)
   
   number of output rows: 0
   
   You can clearly see the amount of BroadcastExchange output, especially if 
there is no data output after calculation.

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