adoroszlai commented on code in PR #8799:
URL: https://github.com/apache/ozone/pull/8799#discussion_r2354373277


##########
hadoop-ozone/multitenancy-ranger/src/main/java/org/apache/hadoop/ozone/om/multitenant/RangerClientMultiTenantAccessController.java:
##########
@@ -81,9 +81,9 @@ public 
RangerClientMultiTenantAccessController(ConfigurationSource conf)
     // OMMultiTenantManager#checkAndEnableMultiTenancy at this point.
 
     String rangerHttpsAddress = conf.get(OZONE_RANGER_HTTPS_ADDRESS_KEY);
-    Preconditions.checkNotNull(rangerHttpsAddress);
+    Objects.requireNonNull(rangerHttpsAddress);

Review Comment:
   Partly.  `Objects` is JDK built-in, so we should prefer it to any 
third-party lib.  In this case I made the change because these were the only 
usage of Guava in the new module.



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