u3Izx9ql7vW4 commented on issue #43929:
URL: https://github.com/apache/arrow/issues/43929#issuecomment-2325763455

   Thanks this appears to fix it. Is this solution still using memory mapped 
files? It's on average ~10% slower than the original version (I managed to get 
it to work by simply doubled the `size` variable when creating the memory 
mapped file). Though my 10% slower metric was measured only on about 14kb of 
data, and not a super thorough benchmark. 


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