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From "Nishant Bangarwa (JIRA)" <>
Subject [jira] [Assigned] (HIVE-17627) Use druid scan query instead of the select query.
Date Sun, 03 Dec 2017 07:50:01 GMT


Nishant Bangarwa reassigned HIVE-17627:

    Assignee: Nishant Bangarwa

> Use druid scan query instead of the select query.
> -------------------------------------------------
>                 Key: HIVE-17627
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Druid integration
>            Reporter: slim bouguerra
>            Assignee: Nishant Bangarwa
> 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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