XComp commented on code in PR #23770:
URL: https://github.com/apache/flink/pull/23770#discussion_r1401771193


##########
flink-runtime/src/test/java/org/apache/flink/runtime/operators/testutils/DriverTestBase.java:
##########
@@ -190,18 +190,18 @@ protected void setNumFileHandlesForSort(int 
numFileHandles) {
         this.numFileHandles = numFileHandles;
     }
 
-    @SuppressWarnings("rawtypes")
+    @SuppressWarnings({"rawtypes", "unchecked"})
     protected void testDriver(Driver driver, Class stubClass) throws Exception 
{

Review Comment:
   ```suggestion
       protected void testDriver(Driver driver, Class<? extends S> stubClass) 
throws Exception {
   ```
   I guess, the trick to avoid adding another `@SuppressWarnings` is to have 
the generic class being specified in the method signature. :thinking:  WDYT?



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