szehon-ho commented on PR #4674:
URL: https://github.com/apache/iceberg/pull/4674#issuecomment-1118039035

   @RussellSpitzer  pointed me to this, I had a pr is orthogonal to this, to 
avoid duplicate computation of all_reachable_files here 
https://github.com/apache/iceberg/pull/3457/files. To me that was the bigger 
time consumer (exploring all reachable files), though maybe I need to re-do 
that pr.
   
   Anyway, agree with @RussellSpitzer that maybe cache is a better option than 
persist (great to see benchmarks for tables with huge snapshots)?  And also it 
would be better to have it be configurable, and be able to be uncached as soon 
as possible.


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