cetra3 opened a new pull request, #10301:
URL: https://github.com/apache/arrow-rs/pull/10301

   # Which issue does this PR close?
   
   Closes https://github.com/apache/arrow-rs/issues/10139
   
   
   # Rationale for this change
   
   This adjusts the internals of the memory pool reservation so that there 
isn't any double accounting when replacing memory with `claim`
   
   # What changes are included in this PR?
   
   Adds a new struct in `pool.rs` which is used to track reservations on 
buffers.   This is essentially a newtype lift of the existing structure, but 
with a few specialised methods to ensure that claim accounts correctly.
   
   # Are these changes tested?
   
   Yes a new test has been added
   
   # Are there any user-facing changes?
   
   No this is just some memory pool accounting internals
   


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