jerryshao commented on code in PR #5757:
URL: https://github.com/apache/gravitino/pull/5757#discussion_r1872808240


##########
api/src/main/java/org/apache/gravitino/SupportsCatalogs.java:
##########
@@ -78,12 +78,14 @@ default boolean catalogExists(String catalogName) {
    * Create a catalog with specified catalog name, type, provider, comment, 
and properties.
    *
    * <p>The parameter "provider" is a short name of the catalog, used to tell 
Gravitino which
-   * catalog should be created. The short name should be the same as the 
{@link CatalogProvider}
-   * interface provided.
+   * catalog should be created. The short name:
+   *
+   * <p>1) should be the same as the {@link CatalogProvider} interface 
provided. 2) can be "null" if
+   * the created catalog is a built-in catalog, like model catalog.

Review Comment:
   Let me add more comment to explain the concept introduced here.



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