public void stop() throws Exception {
    stopTFS();
    stopUFS();

    // clear HDFS client caching
    System.clearProperty("fs.hdfs.impl.disable.cache");
  }
 @Ignore
 @Test
 public void multiMasterJournalCrashIntegrationTest() throws Exception {
   LocalTachyonClusterMultiMaster cluster = setupMultiMasterCluster();
   // Kill the leader one by one.
   for (int kills = 0; kills < TEST_NUM_MASTERS; kills++) {
     CommonUtils.sleepMs(TEST_TIME_MS);
     Assert.assertTrue(cluster.killLeader());
   }
   cluster.stopTFS();
   CommonUtils.sleepMs(TEST_TIME_MS);
   // Ensure the client threads are stopped.
   mExecutorsForClient.shutdown();
   while (!mExecutorsForClient.awaitTermination(TEST_TIME_MS, TimeUnit.MILLISECONDS)) {}
   reproduceAndCheckState(mCreateFileThread.getSuccessNum());
   // clean up
   cluster.stopUFS();
 }