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From "Vihang Karajgaonkar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20306) Implement projection spec for fetching only requested fields from partitions
Date Mon, 27 Aug 2018 22:26:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16594292#comment-16594292
] 

Vihang Karajgaonkar commented on HIVE-20306:
--------------------------------------------

Latest patch adds support for JDO code path as well. As long as the projected fields contain
single-valued fields, patch uses Query.{{setResult}} to fetch only partially filled partitions.
If there are multi-valued fields in the projected list, JDO code path will return the fully
filed partitions since JDO doesn't support multi-valued fields in \{{setResult}}

> Implement projection spec for fetching only requested fields from partitions
> ----------------------------------------------------------------------------
>
>                 Key: HIVE-20306
>                 URL: https://issues.apache.org/jira/browse/HIVE-20306
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Vihang Karajgaonkar
>            Assignee: Vihang Karajgaonkar
>            Priority: Major
>         Attachments: HIVE-20306.02.patch, HIVE-20306.03.patch, HIVE-20306.04.patch, HIVE-20306.05.patch,
HIVE-20306.06.patch, HIVE-20306.07.patch, HIVE-20306.patch
>
>




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