[HIVE-1900] a mapper should be able to span multiple partitions

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.7.0
• Component/s: Query Processor
• Assignee: Namit Jain
• Reporter: Namit Jain
• Created: 07/Jan/11 18:37
• Updated: 16/Dec/11 23:59
• Resolved: 07/Feb/11 19:59

Description

Currently, a mapper only spans a single partition which creates a problem in the presence of many
small partitions (which is becoming a common usecase in facebook).

If the plan is the same, a mapper should be able to span files across multiple partitions