[SPARK-13095] improve performance of hash join with dimension table

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: SQL
• Epic Link: Whole stage codegen
• Assignee: Davies Liu
• Reporter: Davies Liu
• Created: 29/Jan/16 21:06
• Updated: 08/Feb/16 22:09
• Resolved: 08/Feb/16 22:09

Description

The join key is usually an integer or long (primary key, unique), we could have special HashRelation for them.

Issue Links

• links to: [Github] Pull Request #11065 (davies)