[MAPREDUCE-6604] Show quoting examples that do not work in streaming docs

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: documentation
• Assignee: Unassigned
• Reporter: Dustin Cote
• Created: 11/Jan/16 16:32
• Updated: 11/Jan/16 16:32

Description

The hadoop streaming docs here should be improved to include examples where "complicated quoting is can introduce bugs". The line including this text should read something like:

The "-file shellMapper.sh" part isn't entirely necessary. You can simply use a clause like "-mapper 'sed | grep | awk'" or some such but complicated quoting can introduce bugs. As an example, "-mapper 'grep "text"'" will not work. Wrapping the job in a shell script eliminates some of these issues, but quoting should be avoided where possible.