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From "Jason Altekruse (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-2406) Fix expression interpreter to allow executing expressions at planning time
Date Mon, 09 Mar 2015 22:08:39 GMT

    [ https://issues.apache.org/jira/browse/DRILL-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14353738#comment-14353738
] 

Jason Altekruse commented on DRILL-2406:
----------------------------------------

Part 2 (extracted part of previous 2060 part 2 patch) https://reviews.apache.org/r/31871/

> Fix expression interpreter to allow executing expressions at planning time
> --------------------------------------------------------------------------
>
>                 Key: DRILL-2406
>                 URL: https://issues.apache.org/jira/browse/DRILL-2406
>             Project: Apache Drill
>          Issue Type: Improvement
>            Reporter: Jason Altekruse
>            Assignee: Jason Altekruse
>            Priority: Critical
>             Fix For: 0.8.0
>
>         Attachments: DRILL-2406-part1-planning-time-expression-evaulutation.patch, DRILL-2406-part2-planning-time-expression-evaulutation.diff
>
>
> The expression interpreter currently available in Drill cannot be used at planning time,
as it does not have a means to connect to the direct memory allocator stored at the DrillbitContext
level. To implement new rules based on evaluating expressions on constants, or small datasets,
such as partition information this limitation must be addressed.



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