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From "Mehant Baid (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-265) Screen operator silently ignores selection vector in its incoming record batch
Date Mon, 02 Dec 2013 07:35:35 GMT

    [ https://issues.apache.org/jira/browse/DRILL-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836328#comment-13836328
] 

Mehant Baid commented on DRILL-265:
-----------------------------------

One of the recently added tests (TestSpoolingBuffer) violates the rule. Modified the test
plan to have a selection vector remover before the screen operator. 

> Screen operator silently ignores selection vector in its incoming record batch
> ------------------------------------------------------------------------------
>
>                 Key: DRILL-265
>                 URL: https://issues.apache.org/jira/browse/DRILL-265
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Mehant Baid
>            Assignee: Mehant Baid
>            Priority: Minor
>         Attachments: DRILL-265.patch
>
>
> If any child of the Screen operator  adds a selection vector to its record batch. The
screen operator ignores the selection vector and outputs all the data (even the ones not present
in the selection vector). It should do one of the following
> 1. Throw an exception indicating it does not handle selection vector 2
> 2. Handle the selection vector. Project handles the selection vector, we could possibly
leverage some of the logic.  



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