@Override
  public void initialize(String[] args) {
    super.initialize(args);
    if (args.length != 3) {
      throw new IllegalArgumentException("LoadTestDataGeneratorWithMOB can have 3 arguments."
        + "1st argument is a column family, the 2nd argument "
        + "is the minimum mob data size and the 3rd argument " + "is the maximum mob data size.");
    }
    String mobColumnFamily = args[0];
    int minMobDataSize = Integer.parseInt(args[1]);
    int maxMobDataSize = Integer.parseInt(args[2]);
    configureMob(Bytes.toBytes(mobColumnFamily), minMobDataSize, maxMobDataSize);
  }
A load test data generator for MOB
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/util/LoadTestDataGeneratorWithMOB.java