amogh-jahagirdar commented on code in PR #10352:
URL: https://github.com/apache/iceberg/pull/10352#discussion_r1605819844


##########
core/src/main/java/org/apache/iceberg/SchemaUpdate.java:
##########
@@ -533,6 +537,34 @@ private static Schema applyChanges(
       }
     }
 
+    Map<Integer, List<Integer>> specToDeletes = Maps.newHashMap();

Review Comment:
   Maybe put this in a separate `checkNotDeletingColumnsInActiveSpecs` method.



##########
core/src/main/java/org/apache/iceberg/SchemaUpdate.java:
##########
@@ -533,6 +537,34 @@ private static Schema applyChanges(
       }
     }
 
+    Map<Integer, List<Integer>> specToDeletes = Maps.newHashMap();

Review Comment:
   This is a mapping from a spec to the requested fields to delete, where the 
fields are referenced as part of that spec.
   It's a reverse mapping which makes surfacing the error details for the case 
where it's an active partition spec easier. Probably needs a better name though



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