ajantha-bhat commented on code in PR #9877:
URL: https://github.com/apache/iceberg/pull/9877#discussion_r1514489991


##########
nessie/src/main/java/org/apache/iceberg/nessie/NessieIcebergClient.java:
##########
@@ -308,6 +308,10 @@ public List<Namespace> listNamespaces(Namespace namespace) 
throws NoSuchNamespac
   }
 
   public boolean dropNamespace(Namespace namespace) throws 
NamespaceNotEmptyException {
+    if (namespace.isEmpty()) {
+      // As creating empty namespaces is not supported
+      throw new NoSuchNamespaceException("Namespace does not exist: %s", 
namespace);

Review Comment:
   Many existing places we don't wrap it. Like `loadNamespaceMetadata`, 
`updateProperties`. 
   
   Also checked that other catalogs doesn't wrap it too. 
   So, some common test may fail if I wrap it. 
   We can analyze in the follow up. 



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