@AfterClass
  public static void tearDownAfterClass() throws Exception {
    util.shutdownMiniCluster();
  }
Test cases for the "load" half of the HFileOutputFormat bulk load functionality. These tests run
faster than the full MR cluster tests in TestHFileOutputFormat
hbase-server/src/test/java/org/apache/hadoop/hbase/tool/TestBulkLoadHFiles.java