tillrohrmann commented on a change in pull request #14662:
URL: https://github.com/apache/flink/pull/14662#discussion_r585721398



##########
File path: 
flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobMasterTest.java
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@@ -353,13 +359,17 @@ public void declineCheckpoint(DeclineCheckpoint 
declineCheckpoint) {
             RpcCheckpointResponder rpcCheckpointResponder =
                     new RpcCheckpointResponder(jobMasterGateway);
             rpcCheckpointResponder.declineCheckpoint(
-                    jobGraph.getJobID(), new ExecutionAttemptID(), 1, 
userException);
+                    jobGraph.getJobID(), new ExecutionAttemptID(), 1, 
checkpointException);
 
             Throwable throwable =
                     declineCheckpointMessageFuture.get(
                             testingTimeout.toMilliseconds(), 
TimeUnit.MILLISECONDS);
-            assertThat(throwable, instanceOf(SerializedThrowable.class));
-            assertThat(throwable.getMessage(), 
equalTo(userException.getMessage()));
+            assertThat(throwable, instanceOf(CheckpointException.class));
+            Optional<Throwable> throwableWithMessage =
+                    ExceptionUtils.findThrowableWithMessage(throwable, 
userException.getMessage());
+            assertTrue(throwableWithMessage.isPresent());
+            assertThat(
+                    throwableWithMessage.get().getMessage(), 
equalTo(userException.getMessage()));

Review comment:
       Quick question concerning this test @Myasuka: What is this test testing 
after your changes? To me it looks as if we are testing that `new 
CheckpointException(CheckpointFailureReason.CHECKPOINT_DECLINED, 
userException);` correctly transports the `userException`.




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