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From "Gunther Hagleitner (JIRA)" <>
Subject [jira] [Commented] (HIVE-5718) Support direct fetch for lateral views, sub queries, etc.
Date Mon, 03 Nov 2014 09:22:34 GMT


Gunther Hagleitner commented on HIVE-5718:

Sorry guys, this is a pretty large patch and I'd rather not have it in hive 14 at this point.
If we broke PPD we should fix that, not add a lot of additional stuff. At a quick glance at
the patch I'm also concerned about how this splits table name etc from the alias, and in general
uses too much QB info in the simple fetch optimizer. That gave me trouble in the past with
CBO before, because it assumes all kinds of stuff about the AST. [~ashutoshc] and [~jpullokkaran]
know more about that though, maybe they can weigh in.

> Support direct fetch for lateral views, sub queries, etc.
> ---------------------------------------------------------
>                 Key: HIVE-5718
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>         Attachments: D13857.1.patch, D13857.2.patch, D13857.3.patch, HIVE-5718.10.patch.txt,
HIVE-5718.11.patch.txt, HIVE-5718.12.patch.txt, HIVE-5718.13.patch.txt, HIVE-5718.4.patch.txt,
HIVE-5718.5.patch.txt, HIVE-5718.6.patch.txt, HIVE-5718.7.patch.txt, HIVE-5718.8.patch.txt,
> Extend HIVE-2925 with LV and SubQ.

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