ExecutionTester 

/** 
 * Test case where saveNamespace fails in all directories, but then
 * the operator restores the directories and calls it again.
 * This should leave the NN in a clean state for next start.
 */
@Test(timeout=30000) public void testFailedSaveNamespaceWithRecovery() throws Exception {
  doTestFailedSaveNamespace(true);
}