jorisvandenbossche commented on issue #38245:
URL: https://github.com/apache/arrow/issues/38245#issuecomment-1766891597

   Overallocation could indeed be an issue, although I would expect that in 
theory it could know how much to resize the buffer, given that it knows the 
number of values and data type.
   
   FWIW, here is the output of the memory profiler I have been using: 
[memray-flamegraph-corr.zip](https://github.com/apache/arrow/files/12937636/memray-flamegraph-corr.zip)
 (based on the script in the top post; compared to the report attached in the 
top post, this one only reads into arrow memory, excluding the conversion to 
pandas)
   


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