abstractdog edited a comment on pull request #1824:
URL: https://github.com/apache/hive/pull/1824#issuecomment-756195387


   ran through the patches, I'll comment on particular code sections, but first 
a question in general: is there a specific reason for doing this method 
transformation?
   ```
   compute_bit_vector(x, 'hll') -> compute_bit_vector_hll(x)
   ```
   while I was reading the qout changes I realized that this rewrite makes this 
patch so huge, and I'm not sure if it's really worth, as I cannot see the added 
value, and I personally don't have any problem with the algorithm as a 
parameter, also what's the default behavior? this would make sense to me:
   ```
   compute_bit_vector(x) -- could be translated to --> compute_bit_vector(x, 
'hll') 
   ```
   without added value, e.g. the backport of this patch will be painful if we 
keep it this way, and the patch is about vectorization coverage, and has 
nothing to do with compiler basically, what do you think?
   
   


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