private LocalTachyonCluster setupSingleMasterCluster()
     throws IOException, ConnectionFailedException {
   // Setup and start the local tachyon cluster.
   LocalTachyonCluster cluster = new LocalTachyonCluster(100, 100, TEST_BLOCK_SIZE);
   cluster.start();
   mMasterTachyonConf = cluster.getMasterTachyonConf();
   mCreateFileThread = new ClientThread(0, cluster.getClient());
   mExecutorsForClient.submit(mCreateFileThread);
   return cluster;
 }