RussellSpitzer commented on code in PR #15614:
URL: https://github.com/apache/iceberg/pull/15614#discussion_r2957081423


##########
spark/v3.5/spark/src/main/java/org/apache/iceberg/spark/SparkCatalog.java:
##########
@@ -375,6 +383,26 @@ public boolean purgeTable(Identifier ident) {
       String metadataFileLocation =
           ((HasTableOperations) 
table).operations().current().metadataFileLocation();
 
+      boolean isRestCatalog =
+          this.icebergCatalog instanceof RESTCatalog
+              || this.icebergCatalog instanceof RESTSessionCatalog
+              || (this.icebergCatalog instanceof CachingCatalog
+                  && ((CachingCatalog) 
this.icebergCatalog).wrapped_is_instance(RESTCatalog.class));
+
+      if (isRestCatalog && this.restCatalogPurge) {
+        // Delegate purge to REST catalog - allows server-side features like 
UNDROP
+        return dropTableWithPurging(ident);
+      }

Review Comment:
   Could just chain this with the next branch or combine
   ```java
   if (rest + purge) {
   ...
   } else if (rest) {
   ...
   }
   ```
   or 
   ```java
   if (rest) {
     if (purge) {
     ...
     } else {
     ...
     }
   }
   ```



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