kiszk commented on pull request #29762:
URL: https://github.com/apache/spark/pull/29762#issuecomment-696755160


   Thank you. The code and tests alone look good.
   
   I have one question about use cases for `hashUnsafeWords`. Regarding 
`hashUnsafeBytes`. it make sense to return the same hash value against the same 
byte sequence. How about `hashUnsafeWords()`?   
   In general, a word could have the different byte sequence on little-endian 
and big-endian (e.g. `78563412` v.s. `12345678`). While I see the caller of 
`hashUnsafeWords()`, I am not sure what hash value is expected.
   


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