try {
// Retrieve HBASE_TEST_UTILITY.mrCluster via reflection, as it is private.
Field mrClusterField = HBaseTestingUtility.class.getDeclaredField("mrCluster");
mrClusterField.setAccessible(true);
MiniMRCluster mrCluster = (MiniMRCluster) mrClusterField.get(HBASE_TEST_UTILITY);
JobConf jobConf = mrCluster.createJobConf();
Configuration conf = HBASE_TEST_UTILITY.getConfiguration();
String proprety = "mapreduce.jobhistory.address";
String value = jobConf.get(proprety);
if (value != null) { // maybe null if we're running MRv1
conf.set(proprety, value);