alamb commented on PR #9016:
URL: https://github.com/apache/arrow-rs/pull/9016#issuecomment-3677774542

   > 🤔 it actually looks like GC'ing is slowing down -- probably from the need 
to do an extra allocation for new buffers
   
   Upon some more thought I think an extra allocation in GC is a better 
tradeoff, especially since a lot of GC'ing in downstream systems like 
DataFusion actually happens as part of concat and coalesce kernels
   
   @XiangpengHao and @ctsk do you haven any thoughts on this tradeoff?


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