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From "Jason Altekruse (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (DRILL-2395) Improve interpreted expression evaluation to only call the setup method once per batch
Date Fri, 06 Mar 2015 01:44:38 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Altekruse reassigned DRILL-2395:
--------------------------------------

    Assignee: Jason Altekruse  (was: Daniel Barclay (Drill))

> Improve interpreted expression evaluation to only call the setup method once per batch
> --------------------------------------------------------------------------------------
>
>                 Key: DRILL-2395
>                 URL: https://issues.apache.org/jira/browse/DRILL-2395
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Functions - Drill
>            Reporter: Jason Altekruse
>            Assignee: Jason Altekruse
>            Priority: Minor
>
> This enhancement request came out of the review for a patch for DRILL-2060. Copied below
is the discussion from there:
> Jinfeng:
> Do you have a plan to move setup() call into places such that setup() will be called
once for each VectorAccessible input?
> In the code compile + evaluation model, doSetup() will be called per batch, in stead
of per row.
> Jason:
> I have started working on a fix for this. Its a little complicated with setting constant
inputs before the setup method is called. I'm trying to figure out the best way to share code
with the rest of the input passing used in the EvalVisitor. Would you be okay with this being
opened as an enhancement request to be merged a little later? Considering the current use
of the interpreter this won't have an impact on any actual queries today.



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