sungwy commented on code in PR #12376:
URL: https://github.com/apache/iceberg/pull/12376#discussion_r1974643193


##########
open-api/rest-catalog-open-api.yaml:
##########
@@ -4566,7 +4568,9 @@ components:
 
     AuthenticationTimeoutResponse:
       description:
-        Credentials have timed out. If possible, the client should refresh 
credentials and retry.
+        This is an optional status response type that the REST Catalog can 
issue when the
+        token has expired. The client MAY request a new access token and retry 
the request.
+        401 UnauthorizedResponse SHOULD be preferred over this response type 
on token expiry.

Review Comment:
   > To retry or not is the client side decision
   
   Yes I agree with you. Although I think it'll be confusing for application 
developers if for example, PyIceberg removed retry handling for 419 status on 
the next version after the 419 status code is deprecated on the REST Catalog. 
The application developer would expect 419 status codes from their REST Catalog 
server to result in retries, and on version upgrade they their PyIceberg 
application no longer will. Hence, as a community, we may need to keep 419 
status code handling for backward compatibility.
   
   



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