[CRUNCH-68] Crunch examples don't accept generic tool arguments

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.4.0
• Component/s: Core
• Assignee: Matthias Friedrich
• Reporter: Roman Shaposhnik
• Created: 19/Sep/12 16:43
• Updated: 16/Nov/12 20:06
• Resolved: 23/Sep/12 07:27

Description

Currently all crunch examples have the following code:

    if (args.length != 3) {
      System.err.println();
      System.err.println("Usage: " + this.getClass().getName() + " [generic options] input output");
      System.err.println();
      GenericOptionsParser.printGenericCommandUsage(System.err);
      return 1;
    }

this is incorrect since run() gets to see all arguments even generic ones and thus you can't predict the value of
args.length.
This is also, unfortunately a major blocker, for using Crunch with Hadoop 2 because of a MAPREDUCE-4068.

Essentially at this point a combination of MAPREDUCE-4068 and inability to pass -libjars makes Crunch example DOA for Hadoop 2 clusters.

Issue Links

• relates to: CRUNCH-79 Examples document has incorrect path and should include AverageBytesByIP and TotalBytesByIP