Abyss-lord commented on code in PR #5939:
URL: https://github.com/apache/gravitino/pull/5939#discussion_r1894902206


##########
clients/cli/src/main/java/org/apache/gravitino/cli/GravitinoCommandLine.java:
##########
@@ -318,14 +319,29 @@ private void handleSchemaCommand() {
     String catalog = name.getCatalogName();
 
     Command.setAuthenticationMode(auth, userName);
+    List<String> missingEntities = Lists.newArrayList();
+    if (metalake == null) missingEntities.add(CommandEntities.METALAKE);
+    if (catalog == null) missingEntities.add(CommandEntities.CATALOG);
 
     // Handle the CommandActions.LIST action separately as it doesn't use 
`schema`
     if (CommandActions.LIST.equals(command)) {
+      if (!missingEntities.isEmpty()) {
+        System.err.println("Missing required argument(s): " + 
COMMA_JOINER.join(missingEntities));
+        Main.exit(-1);
+      }
       newListSchema(url, ignore, metalake, catalog).handle();
       return;
     }

Review Comment:
   Hi @tengqm , I’ve finished updating the code. Please take a look at the PR 
again when you have time.



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