@BeforeClass
  public static void setupCluster() throws Exception {
    setupConf(UTIL.getConfiguration());
    UTIL.startMiniCluster(1);
  }
Tests class that validates that "post" observer hook methods are only invoked when the operation
was successful.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestMasterObserverPostCalls.java