szehon-ho opened a new pull request, #6581:
URL: https://github.com/apache/iceberg/pull/6581

   his adds an action to cleanup dangling (invalid) DeleteFiles that may 
otherwise keep getting carried over with the table's current snapshot.
   
   The problem and design doc is here: 
https://docs.google.com/document/d/11d-cIUR_89kRsMmWnEoxXGZCvp7L4TUmPJqUC60zB5M/edit#
   
   In a nutshell, the current table-wide mechanism is crude and may miss many 
instances of aging off invalid DeleteFiles, even after compaction, and 
negatively impact performance.


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