protected MultiThreadedReader prepareReaderThreads(LoadTestDataGenerator dataGen,
    Configuration conf, TableName tableName, double verifyPercent) throws IOException {
    MultiThreadedReader reader = new MultiThreadedReader(dataGen, conf, tableName, verifyPercent);
    return reader;
  }
A write/read/verify load test on a mini HBase cluster. Tests reading and then writing.
hbase-diagnostics/src/test/java/org/apache/hadoop/hbase/util/TestMiniClusterLoadSequential.java