private void configureMob(byte[] mobColumnFamily, int minMobDataSize, int maxMobDataSize) {
    this.mobColumnFamily = mobColumnFamily;
    mobKvGenerator = new LoadTestKVGenerator(minMobDataSize, maxMobDataSize);
  }
A load test data generator for MOB
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/util/LoadTestDataGeneratorWithMOB.java