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From "Jason Dere (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19096) query result cache interferes with explain analyze
Date Thu, 26 Apr 2018 00:42:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16453299#comment-16453299
] 

Jason Dere commented on HIVE-19096:
-----------------------------------

results_cache tests have been moved over to MiniLlapLocalCliDriver, updating patch as a result.

> query result cache interferes with explain analyze 
> ---------------------------------------------------
>
>                 Key: HIVE-19096
>                 URL: https://issues.apache.org/jira/browse/HIVE-19096
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Zoltan Haindrich
>            Assignee: Jason Dere
>            Priority: Major
>         Attachments: HIVE-19096.1.patch, HIVE-19096.2.patch
>
>
> if  result cache is active; the explain analyze doesn't really return usefull informations;
even for unseen queries the result is like this:
> {code}
> +----------------------------------------+
> |                Explain                 |
> +----------------------------------------+
> | Stage-0                                |
> |   Fetch Operator                       |
> |     Cached Query Result:true,limit:-1  |
> |                                        |
> +----------------------------------------+
> {code}



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