[MAPREDUCE-6751] Add debug log message when splitting is not possible due to unsplittable compression

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: client, mrv1, mrv2
• Labels: supportability
• Hadoop Flags: Reviewed
• Assignee: Peter Vary
• Reporter: Peter Vary
• Created: 11/Aug/16 00:03
• Updated: 30/Aug/16 01:13
• Resolved: 16/Aug/16 19:21

Description

There should be a message logged in case of the mapreduce will only spam one mapper since the source file is compressed with an unsplitable algorithm