[SPARK-32751] Add code-gen for ObjectHashAggregateExec

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.1.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Cheng Su
• Created: 31/Aug/20 05:54
• Updated: 29/Jan/21 07:07

Description

Object hash aggregate is useful when aggregate function is not supported by hash aggregate, and hash aggregate has codegen long time ago. Do not see a strong reason why we don't have object hash aggregate. Create this Jira to add codegen for object hash aggregate for better CPU execution performance.