RussellSpitzer commented on code in PR #7275:
URL: https://github.com/apache/iceberg/pull/7275#discussion_r1157747661


##########
core/src/main/java/org/apache/iceberg/jdbc/JdbcCatalog.java:
##########
@@ -419,6 +419,17 @@ public boolean dropNamespace(Namespace namespace) throws 
NamespaceNotEmptyExcept
     return deletedRows > 0;
   }
 
+  @Override
+  public boolean dropNamespace(Namespace namespace, boolean cascade)
+      throws NamespaceNotEmptyException {
+    if (cascade) {
+      // recursively delete all nested namespaces
+      listNamespaces(namespace).forEach(n -> dropNamespace(n, true));

Review Comment:
   JDBC Supports nested namespaces?



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