[CRUNCH-165] Pipelines should automatically use CombineFileInputFormat where input consists of many small files

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.4.0
• Fix Version/s: 0.8.0
• Component/s: Core
• Assignee: Josh Wills
• Reporter: Dave Beech
• Created: 13/Feb/13 16:45
• Updated: 25/Nov/13 06:06
• Resolved: 02/Sep/13 16:12

Description

Hive had a feature introduced in HIVE-74 whereby CombineFileInputFormat would be used if the input data consisted of many small files, making the resulting mapreduce jobs more efficient by giving individual mappers more data to process. This would be a nice feature for Crunch to have, too.