public static void main(String[] args) throws Throwable {
    pgd.addClass(RowCounter.NAME, RowCounter.class, "Count rows in HBase table");
    ProgramDriver.class.getMethod("driver", new Class[] { String[].class }).invoke(pgd,
      new Object[] { args });
  }
Driver for hbase mapreduce jobs. Select which to run by passing name of job to this main.
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapred/Driver.java