eaugene commented on code in PR #13195:
URL: https://github.com/apache/pinot/pull/13195#discussion_r1611104017


##########
pinot-broker/src/main/java/org/apache/pinot/broker/api/AccessControl.java:
##########
@@ -42,21 +46,58 @@ default boolean hasAccess(RequesterIdentity 
requesterIdentity) {
 
   /**
    * Fine-grained access control on parsed broker request. May check table, 
column, permissions, etc.
-   *
+   * The default implementation is kept to have backward compatibility with 
the existing implementations
    * @param requesterIdentity requester identity
    * @param brokerRequest broker request (incl query)
    *
    * @return {@code true} if authorized, {@code false} otherwise
    */
-  boolean hasAccess(RequesterIdentity requesterIdentity, BrokerRequest 
brokerRequest);
+
+  default boolean hasAccess(RequesterIdentity requesterIdentity, BrokerRequest 
brokerRequest) {
+    return true;

Review Comment:
   I thought a bit about this before arriving at an option to have the default 
set for both `hasAccess()` & `verifyAccess()` ( now `authorize()` ).
   
   
   Now the RequestHandlers are calling verifyAccess(), and the default 
implementation of `verifyAccess()` now calls `hasAccess()` - This is a safe 
case for all existing implementations of AccessControl to work  ( added a UT 
for this specific scenario ).
   
   about having default for `hasAccess()` - The goal was to move away from 
`hasAccess()` to `VerifyAccess()` for all implementations . So as not to cause 
any friction during this intermediary phase, I added a default implementation. 
   
   I'll proceed to mark `hasAccess()` as `@Deprecated`. LMK your thoughts? 



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