private TableDescriptor createTableDescriptor(TableName tableName, boolean hasMob) {
    ColumnFamilyDescriptorBuilder builder = ColumnFamilyDescriptorBuilder.newBuilder(FAMILY);
    if (hasMob) {
      builder.setMobEnabled(true);
      builder.setMobThreshold(0);
    }
    return TableDescriptorBuilder.newBuilder(tableName).setColumnFamily(builder.build()).build();
  }
Generate the mob value. the size of the value
@return the mob value generated
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDeleteMobTable.java