private LoadTestDataGenerator getLoadGeneratorInstance(String clazzName) throws IOException {
    try {
      Class<?> clazz = Class.forName(clazzName);
      Constructor<?> constructor =
        clazz.getConstructor(int.class, int.class, int.class, int.class, byte[][].class);
      return (LoadTestDataGenerator) constructor.newInstance(minColDataSize, maxColDataSize,
        minColsPerKey, maxColsPerKey, families);
    } catch (Exception e) {
      throw new IOException(e);
    }
  }
Apply column family options such as Bloom filters, compression, and data block encoding.
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/util/LoadTestTool.java