[jira] [Commented] (DRILL-4919) select count(1) on csv with header no longer works

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15780625#comment-15780625 ] 

Arina Ielchiieva commented on DRILL-4919:
-----------------------------------------

This problem existed before. After DRILL-3474 introduced implicit columns, count(1) on csv with header started to work (non-intentionally). But DRILL-3474 introduced the bug connected with json query performance DRILL-4852. After that bug fix count(1) on csv with header stopped to work as before.

> select count(1) on csv with header no longer works
> --------------------------------------------------
>
>                 Key: DRILL-4919
>                 URL: https://issues.apache.org/jira/browse/DRILL-4919
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Functions - Drill
>    Affects Versions: 1.8.0
>            Reporter: F Méthot
>            Assignee: Arina Ielchiieva
>            Priority: Minor
>             Fix For: Future
>
>
> This happens since  1.8
> Dataset (I used extended char for display purpose) test.csvh:
> a,b,c,d\n
> 1,2,3,4\n
> 5,6,7,8\n
> Storage config:
> "csvh": {
>   "type": "text",
>   "extensions" : [
>       "csvh"
>    ],
>    "extractHeader": true,
>    "delimiter": ","
>   }
> select count(1) from dfs.`test.csvh`
> Error: UNSUPPORTED_OPERATION ERROR: With extractHeader enabled, only header names are supported
> coumn name columns
> column index
> Fragment 0:0



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