[HIVE-3765] Bucket map join optimization not applied to left semi join

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.11.0
• Assignee: Gang Tim Liu
• Reporter: Kevin Wilfong
• Created: 03/Dec/12 18:59
• Updated: 05/Dec/12 06:56

Description

When all the hints and settings are present to use the bucket map join optimization, it will not get applied if the join is a left semi join. It works for left outer joins, so it seems it should work for left semi joins.