zhli1142015 edited a comment on pull request #28769:
URL: https://github.com/apache/spark/pull/28769#issuecomment-641752768


   > Then how about capture the exception and ask the user to increase the 
related configuration or try loading the page again?
   
   Because there is disk space limitation, we can only mitigate it by stopping 
service and manually cleaning disk cache, this is a little annoying. 
   
   > What is the benefit of this PR to users?
   
   We actually use spark history server as long running service to provide 
diagnostic experience to others. The benefit to us is we can keep it as real 
long running service and don't need to stop service and manually clean HS disk 
cache after some period.


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