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https://issues.apache.org/jira/browse/HIVE-6654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13934735#comment-13934735
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Navis commented on HIVE-6654:
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Views are regarded as sub-queries and current simple fetch optimizer does not
accept those, which seemed to be harsh. I'll take look at this later.
> SimpleFetchOptimizer ignores views
> ----------------------------------
>
> Key: HIVE-6654
> URL: https://issues.apache.org/jira/browse/HIVE-6654
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.13.0
> Reporter: Gopal V
> Attachments: HIVE-6654-test.tgz
>
>
> SimpleFetchOptimizer optimizes "select * from session_orc limit 1;"
> But when an alias view is created like "create view session as select * from
> session_orc";
> The simple fetch optimizer fails to kick in and optimize away "select * from
> session limit 1;" as a fetch only task.
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