flyrain commented on code in PR #10256:
URL: https://github.com/apache/iceberg/pull/10256#discussion_r1591603492


##########
core/src/main/java/org/apache/iceberg/rest/RESTSessionCatalog.java:
##########
@@ -215,6 +215,12 @@ public void initialize(String name, Map<String, String> 
unresolved) {
     this.paths = ResourcePaths.forCatalogProperties(mergedProps);
 
     String token = mergedProps.get(OAuth2Properties.TOKEN);
+    // re-resolve these variables in case they were overridden by the config 
endpoint
+    credential = mergedProps.get(OAuth2Properties.CREDENTIAL);

Review Comment:
   I think line 217 is to get the token from client config other than from the 
server config response. `mergedProps` mixes properties from both client config 
and server config response.
   
   Also I believe a client should only get tokens either from users' config or 
from token server URI response. Config endpoint shouldn't be used for passing 
tokens. Otherwise, every client may use the same token/credentials, which 
doesn't make sense to me. 



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