SteNicholas commented on code in PR #3455:
URL: https://github.com/apache/celeborn/pull/3455#discussion_r2329259447


##########
common/src/main/java/org/apache/celeborn/common/network/sasl/SecretRegistry.java:
##########
@@ -28,4 +30,12 @@ public interface SecretRegistry {
   void register(String appId, String secret);
 
   void unregister(String appId);
+
+  /**
+   * Checks if the SecretRegistry can register the application. If it cant 
register (for example,
+   * not the current leader when running in HA), then throws an exception
+   */
+  default void ensureRegistrationAllowed() throws IOException {

Review Comment:
   Why does not this method return boolean value to represent whether the 
SecretRegistry can register the application? IMO, returning boolean value is 
better than throwing exception for implementation of `SecretRegistry`.



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