Github user HyukjinKwon commented on the issue:

    https://github.com/apache/spark/pull/20424
  
    So, I think I am fine. I believe it's already a corner case and I think we 
don't have to put a lot of efforts on this ... to be honest. I only wanted to 
double check if there is a slight step back in the case of `0`.
    
    @vanzin, @squito and @bersprockets, so, are we fine with that error message 
for now here?
    
    I was thinking we could just go ahead but I believe it's nicer if I can 
double check / make sure before going and merging this one.
    
    Do you guys have some more information to add in the error message?


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