frbvianna commented on issue #37976:
URL: https://github.com/apache/arrow/issues/37976#issuecomment-1755540115

   Thanks @zeroshade for your detailed explanation. Since the alternative of 
chunking based on the IPC encoded bytes like I suggested is a bit more grey 
area to me, mostly concerning its performance, I am convinced that the row size 
estimation proposed in this issue might be a good place to start.
   
   I am a bit confused though around the null bitmaps and variable data type 
width estimation. 
   Would it not make sense for the Arrow library to provide that sort of 
calculation? I find myself reaching deep into some internal Arrow concepts to 
understand how to calculate the total row size from the Record column buffers. 
   
   @polestar1988, would you mind sharing your complete calculation code, 
please? 
   


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