eevanwong commented on pull request #2191:
URL: https://github.com/apache/drill/pull/2191#issuecomment-812024522


   1. Yes there are 17 alerts in total caused by this issue.
   
   
![image](https://user-images.githubusercontent.com/71536798/113321275-6ed9da80-92e1-11eb-8ee6-e8e9bcbbf155.png)
   
   2.  I'm not sure if the null errors are related, the main issue on the alert 
was that it would point to an NPE if its value didnt change by the time it got 
to a statement that would use it.
   
    I suppose I could try ensuring var is not null forever; however, it would 
just be towards another arbitrary value and it would be odd to do it depending 
on what type of variable it is (e.g File variable I wouldnt know what value to 
point it towards).


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