Uploaded image for project: 'Hadoop Map/Reduce'
  1. Hadoop Map/Reduce
  2. MAPREDUCE-6389

Fix BaileyBorweinPlouffe CLI usage message

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0, 3.0.0-alpha1
    • Component/s: None
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      The usage message from code does not match with the command helpline option.

      usage from command line

      hduser@canberra:~/work/software/cloudera/hadoop-2.0.0-cdh4.0.0$ hadoop jar src/hadoop-mapreduce-project/hadoop-mapreduce-examples/target/hadoop-mapreduce-examples-2.0.0-cdh4.0.0.jar 
      An example program must be given as the first argument.
      Valid program names are:
        aggregatewordcount: An Aggregate based map/reduce program that counts the words in the input files.
        aggregatewordhist: An Aggregate based map/reduce program that computes the histogram of the words in the input files.
        bbp: A map/reduce program that uses Bailey-Borwein-Plouffe to compute exact digits of Pi.
        dbcount: An example job that count the pageview counts from a database.
        distbbp: A map/reduce program that uses a BBP-type formula to compute exact bits of Pi.
        grep: A map/reduce program that counts the matches of a regex in the input.
      

      usage from code

       public int run(String[] args) throws IOException {
          if (args.length != 4) {
            System.err.println("Usage: java " + getClass().getName()
                + " <startDigit> <nDigits> <nMaps> <workingDir>");
            ToolRunner.printGenericCommandUsage(System.err);
            return -1;
          }
      

        Attachments

        1. MAPREDUCE-6389.patch
          1 kB
          Brahma Reddy Battula

          Activity

            People

            • Assignee:
              brahmareddy Brahma Reddy Battula
              Reporter:
              brahmareddy Brahma Reddy Battula
            • Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: