public void shutdownMiniMapReduceCluster() {
    if (mrCluster != null) {
      LOG.info("Stopping mini mapreduce cluster...");
      mrCluster.shutdown();
      mrCluster = null;
      LOG.info("Mini mapreduce cluster stopped");
    }
    // Restore configuration to point to local jobtracker
    conf.set("mapreduce.jobtracker.address", "local");
  }
Stops the previously started <code>MiniMRCluster</code>.
hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtil.java