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https://issues.apache.org/jira/browse/HIVE-1738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siying Dong updated HIVE-1738:
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Attachment: HIVE.1738.3.patch
Modify according to Namit's comments.
> Optimize Key Comparison in GroupByOperator
> ------------------------------------------
>
> Key: HIVE-1738
> URL: https://issues.apache.org/jira/browse/HIVE-1738
> Project: Hive
> Issue Type: Improvement
> Reporter: Siying Dong
> Assignee: Siying Dong
> Attachments: HIVE.1738.1.patch, HIVE.1738.2.patch, HIVE.1738.3.patch
>
>
> GroupByOperator uses ObjectInspectorUtils.compare() to compare keys, which is
> written for generalized object comparisons, which is not optimized for
> group-by operator. By optimizing this logic, we expect to see obvious
> improvements in GroupByOperator.
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