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From "Jason Altekruse (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-2406) Fix expression interpreter to allow executing expressions at planning time
Date Mon, 09 Mar 2015 21:28:38 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jason Altekruse updated DRILL-2406:
    Attachment: DRILL-2406-part2-planning-time-expression-evaulutation.diff

The part one patch attached here is identical to the old DRILL-2060 part 1 patch that was
associated with a JIRA that now depends on this one. The part 2 patch is the portion of the
2060 part 2 patch that enables access the expression interpretation at planning time. The
constant folding rule will be checked in as 2060, but all of the infrastructure added to make
expression evaluation possible at planning time has been moved here.

> 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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