[GitHub] [spark] gongzh021 commented on pull request #33457: [SPARK-36237][UI][SQL] Attach and start handler after application started in UI

[GitBox]

gongzh021 commented on PR #33457:
URL: https://github.com/apache/spark/pull/33457#issuecomment-1142177922

   > @AngersZhuuuu Before this change, the status code `500` is returned and 
helpful error message is shown if we access to `/jobs` before the UI is 
prepared. 
![SPARK-36237-500](https://user-images.githubusercontent.com/4736016/126939072-522f0fbf-cb12-467a-b56c-84cdb42d1ff8.png)
   > 
   > But after this change, the status code `404` is returned and no helpful 
error message is shown. 
![SPARK-36237-404](https://user-images.githubusercontent.com/4736016/126939133-65927264-348f-4587-847f-563897d95c6f.png)
   > 
   > It might be confusable for users.
   
   I have the same bug.
   Excuse me, how did you solve it?
   


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