XiDuo You created SPARK-43232:
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Summary: Improve ObjectHashAggregateExec performance
Key: SPARK-43232
URL: https://issues.apache.org/jira/browse/SPARK-43232
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.5.0
Reporter: XiDuo You
The `ObjectHashAggregateExec` has two preformance issues:
- heavy overhead of scala sugar in `createNewAggregationBuffer`
- unnecessary grouping key comparation if fallback to sort based aggregator
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