Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/945#discussion_r37978039
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/jobmanager/JobSubmitTest.java
 ---
    @@ -170,4 +170,43 @@ public void initializeOnMaster(ClassLoader loader) 
throws Exception {
                        fail(e.getMessage());
                }
        }
    +
    +   /**
    +    * Verifies failure when the client and job manager versions mismatch
    +    */
    +   @Test
    +   public void testFailureClientJobManagerVersionMismatch() {
    +           try {
    +                   // create a simple job graph
    +
    +                   JobVertex jobVertex = new JobVertex("Vertex that fails 
in initializeOnMaster") {
    +
    +                           @Override
    +                           public void initializeOnMaster(ClassLoader 
loader) throws Exception {
    +                                   throw new RuntimeException("test 
exception");
    --- End diff --
    
    Why using a faulty `JobVertex` here. This might also be the reason for the 
"expected" `JobExecutionException` then. And you don't check properly whether 
that's not the cause for it.


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