private void getArgs(final int start, final String[] args) {
    if (start + 1 > args.length) {
      throw new IllegalArgumentException("must supply the number of clients");
    }
    N = Integer.parseInt(args[start]);
    if (N < 1) {
      throw new IllegalArgumentException("Number of clients must be > 1");
    }
    // Set total number of rows to write.
    R = R * N;
  }
Format passed integer.
@param number the integer to format
@return Returns zero-prefixed 10-byte wide decimal version of passed number (Does absolute in
        case number is negative).
hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/PerformanceEvaluation.java