public void queryKey(Get[] gets, boolean verify, long[] keysToRead) throws IOException {
      // read the data
      long start = System.nanoTime();
      // Uses multi/batch gets
      Result[] results = table.get(Arrays.asList(gets));
      long end = System.nanoTime();
      verifyResultsAndUpdateMetrics(verify, gets, end - start, results, table, false);
    }
Should only be used for the concurrent writer/reader workload. The maximum key we are allowed
to read, subject to the "key window" constraint.
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/util/MultiThreadedReader.java