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https://issues.apache.org/jira/browse/HIVE-17627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nishant Bangarwa updated HIVE-17627:
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Attachment: HIVE-17627.1.patch
> Use druid scan query instead of the select query.
> -------------------------------------------------
>
> Key: HIVE-17627
> URL: https://issues.apache.org/jira/browse/HIVE-17627
> Project: Hive
> Issue Type: Bug
> Components: Druid integration
> Reporter: slim bouguerra
> Assignee: Nishant Bangarwa
> Priority: Major
> Attachments: HIVE-17627.1.patch, HIVE-17627.patch
>
>
> The biggest difference between select query and scan query is that, scan
> query doesn't retain all rows in memory before rows can be returned to client.
> It will cause memory pressure if too many rows required by select query.
> Scan query doesn't have this issue.
> Scan query can return all rows without issuing another pagination query,
> which is extremely useful when query against historical or realtime node
> directly.
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