@BeforeClass
  public static void setup() throws Exception {
    // Uncomment the following line if more verbosity is needed for
    // debugging (see HBASE-12285 for details).
    // Logger.getLogger("org.apache.hadoop.hbase").setLevel(Level.DEBUG);
    TEST_UTIL.startMiniZKCluster();
    TEST_UTIL.startMiniDFSCluster(3);
  }
Base class for testing distributed log splitting.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/AbstractTestDLS.java