[jira] [Updated] (DRILL-3508) Selecting from an empty directory in a union failes

["Jinfeng Ni (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-3508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jinfeng Ni updated DRILL-3508:
------------------------------
    Assignee: Sean Hsuan-Yi Chu  (was: Jinfeng Ni)

> Selecting from an empty directory in a union failes
> ---------------------------------------------------
>
>                 Key: DRILL-3508
>                 URL: https://issues.apache.org/jira/browse/DRILL-3508
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.1.0
>            Reporter: Stefán Baxter
>            Assignee: Sean Hsuan-Yi Chu
>             Fix For: 1.2.0
>
>
> I union select where the right hand side points to an empty directory files with the following error code:
> Error: PARSE ERROR: Index: 0, Size: 0
> [Error Id: fed7527a-9d7a-4980-80f5-ff3f0b92d49b on localhost:31010] (state=,code=0)
> We use this to merge tenant based information and sometimes there are no files on the right hand side of the union. It would be ideal that that scenario would return an empty list rather than an error.



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