nastra commented on PR #14378:
URL: https://github.com/apache/iceberg/pull/14378#issuecomment-3425020577

   > Hey @nastra , Thanks for taking a look! In my opinion the unit tests for 
`TestFileIOTracker` are required but not entirely enough. There is untested 
code in RESTSessionCatalog where we have no detection of a regression if 
someone messes up the usage of the tracker on the catalog side. I was working 
on this areas of the code for the client-side table cache for the 
freshness-aware table loading and I had a false impression that everything is 
fine with my ongoing changes because the tests passed, however, I did it wrong 
with the tracker and was surprised there are no test coverage that detects 
this. Also, with my mentioned freshness loading change I'd like to add further 
tests relevant for IO tracking together with the table cache and this PR is the 
first step for that. Hope this makes sense!
   
   I'm currently undecided on this, so let's see what others think


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