xxubai commented on code in PR #4244:
URL: https://github.com/apache/amoro/pull/4244#discussion_r3419451889


##########
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/interceptor/KerberosInvocationHandler.java:
##########
@@ -56,7 +56,6 @@ public Object invoke(Object proxy, Method method, Object[] 
args) throws Throwabl
           authenticatedFileIO.doAs(
               () -> {
                 try {
-                  method.setAccessible(true);

Review Comment:
   `KerberosInvocationHandler` currently proxies methods exposed through the 
proxied object's **interfaces**. 
   
   In practice, the invocation path goes through public interfaces such as 
`OneInputStreamOperator` and `SourceFunction`. As a result, these method 
invocations do not require `method.setAccessible(true)`.
   
   Keeping `method.setAccessible(true)` would introduce unnecessary 
deep-reflection behavior, which is exactly what this JDK17 compatibility change 
is trying to avoid.



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