szehon-ho opened a new pull request, #15014:
URL: https://github.com/apache/iceberg/pull/15014

   Spark 4.1 added "WriteSummary" API for certain DML operations.  Merge Into 
is the main one so far.
   
   This adds these operation metadata to Iceberg Snapshot Summary.  It can be 
useful to debug data corruption issues, etc.  
   
   It is equivalent to the metadata stored in Delta Lake for debugging:  
https://docs.delta.io/delta-utility/#retrieve-delta-table-history 
   
   Welcome suggestions how to organize this summary


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