mapleFU commented on PR #34281:
URL: https://github.com/apache/arrow/pull/34281#issuecomment-1452873147

   @westonpace HDD 4MB Sequential read means, at least 4MB per row-group or 
column-chunk?
   I think currently, we don't support split row-group by rows. How can we use 
1Mi Rows to split?


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