FANNG1 commented on code in PR #4395:
URL: https://github.com/apache/gravitino/pull/4395#discussion_r1716589744


##########
iceberg/iceberg-common/src/main/java/org/apache/gravitino/iceberg/common/utils/IcebergCatalogUtil.java:
##########
@@ -99,8 +99,11 @@ private static KerberosClient initKerberosAndReturnClient(
       Map<String, String> properties, Configuration conf) {
     try {
       KerberosClient kerberosClient = new KerberosClient(properties, conf);
-      File keytabFile =
-          
kerberosClient.saveKeyTabFileFromUri(Long.valueOf(properties.get("catalog_uuid")));
+
+      // For Iceberg rest server, we haven't set the catalog_uuid, so we set 
it to 0 as there is
+      // only one catalog in the rest server, so it's okay to set it to 0.
+      String catalogUUID = properties.getOrDefault("catalog_uuid", "0");

Review Comment:
   There was no properties to identify a catalog in IcebergConfig,  we could 
add it when constructing IcebergTableOps like, we could do it in another PR.
   ```java
   IcebergTableOps(IcebergConfig icebergConfig, String catalogIdentifier) 
   ```



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