public void noCleanupAndCleanup() throws IOException {

    TestShuffleDataContext dataContext = createSomeData();



    ExternalShuffleBlockResolver resolver =

      new ExternalShuffleBlockResolver(conf, null, sameThreadExecutor);

    resolver.registerExecutor("app", "exec0", dataContext.createExecutorInfo("shuffleMgr"));

    resolver.applicationRemoved("app", false /* cleanup */);



    assertStillThere(dataContext);



    resolver.registerExecutor("app", "exec1", dataContext.createExecutorInfo("shuffleMgr"));

    resolver.applicationRemoved("app", true /* cleanup */);



    assertCleanedUp(dataContext);

  }