tustvold commented on issue #4864:
URL: https://github.com/apache/arrow-rs/issues/4864#issuecomment-1737037285

   > We can only keep the arrays we need to output and release the others.
   
   That is still potentially a non-trivial amount of data, it could 
theoretically be an entire column chunk worth :sweat_smile:
   
   Perhaps we could add a configurable threshold of the maximum number of bytes 
to keep around in this way, and fallback to decoding columns again if this 
threshold is exceeded?
   


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