[GitHub] [spark] akiyamaneko opened a new pull request #31314: [SPARK-34221][WEBUI]the error message of the stage in the UI page sometimes is blank

Sun, 24 Jan 2021 20:50:08 -0800 


akiyamaneko opened a new pull request #31314:
URL: https://github.com/apache/spark/pull/31314


   
   ### What changes were proposed in this pull request?
   Ensure that if a stage fails in the UI page, the corresponding error message 
can be displayed correctly.
   
   
   ### Why are the changes needed?
   errormessage is not handled properly in JavaScript. If the 'at' is not 
included, the error message on the page will be blank.
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   
   ### How was this patch tested?
   Manual test shows as belows, just a js change:
   
   before modified:
   
![problem](https://user-images.githubusercontent.com/52202080/105662306-5bd61300-5f0a-11eb-8f07-ec3392062508.png)
   
   after modified
   ![after 
modified](https://user-images.githubusercontent.com/52202080/105662285-4bbe3380-5f0a-11eb-886c-2923b760ad1b.png)
   
   


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