[IMPALA-3855] small table left join big table Can be optimized for broadcast

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.5.0
• Fix Version/s: Impala 2.5.0
• Component/s: Backend, Frontend
• Target Version: Impala 2.6.0
• Assignee: Unassigned
• Reporter: fishing
• Created: 13/Jul/16 08:56
• Updated: 04/Oct/16 03:18
• Resolved: 04/Oct/16 03:18

Description

I think small table broadcast to bigtable , then use inner join , and then the next node add some not join row in small table . which can be very valueable