[HIVE-6516] Group splits in bucket map join in tez to improve efficiency

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: tez-branch
• Component/s: Tez
• Assignee: Vikram Dixit K
• Reporter: Vikram Dixit K
• Created: 27/Feb/14 21:02
• Updated: 27/Feb/14 21:23

Description

Currently, we do not group splits while executing a bucket map join. If we can group the splits correctly, we can be more efficient (i.e. need less tasks in a particular stage)