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https://issues.apache.org/jira/browse/DRILL-776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinfeng Ni updated DRILL-776:
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Attachment: DRILL-776.1.patch
> Support selection vector sv2 and sv4 in partition sender
> ---------------------------------------------------------
>
> Key: DRILL-776
> URL: https://issues.apache.org/jira/browse/DRILL-776
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Jinfeng Ni
> Assignee: Jinfeng Ni
> Attachments: DRILL-776.1.patch
>
>
> Currently, Partition sender does not accept sv2 or sv4. If the incoming batch
> is sv2 or sv4, a SelectionVectorRemover (SVR) op is required to remove sv2 or
> sv4. SVR is essentially doing copy, while partition sender is doing copy as
> well. This would introduce unnecessary copy to the whole query process.
> In stead, we should enhance Partition sender so that it could take sv2 and
> sv4 directly, removing the SVR's copy overhead. This would improve the query
> performance in terms of cpu and memory consumption.
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