long test() throws IOException, InterruptedException {
      testSetup();
      LOG.info("Timed test starting in thread " + Thread.currentThread().getName());
      final long startTime = System.nanoTime();
      try {
        testTimed();
      } finally {
        testTakedown();
      }
      return (System.nanoTime() - startTime) / 1000000;
    }
Populated by testTakedown. Only implemented by RandomReadTest at the moment.
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/PerformanceEvaluation.java