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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5851) Empty table during a join operation with a non empty table produces cast exception
Date Wed, 24 Jan 2018 18:36:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16338036#comment-16338036
] 

ASF GitHub Bot commented on DRILL-5851:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/drill/pull/1059


> Empty table during a join operation with a non empty table produces cast exception 
> -----------------------------------------------------------------------------------
>
>                 Key: DRILL-5851
>                 URL: https://issues.apache.org/jira/browse/DRILL-5851
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Relational Operators
>    Affects Versions: 1.11.0
>            Reporter: Hanumath Rao Maduri
>            Assignee: Hanumath Rao Maduri
>            Priority: Major
>              Labels: ready-to-commit
>             Fix For: 1.13.0
>
>
> Hash Join operation on tables with one table empty and the other non empty throws an
exception 
> {code} 
> Error: SYSTEM ERROR: DrillRuntimeException: Join only supports implicit casts between
1. Numeric data
>  2. Varchar, Varbinary data 3. Date, Timestamp data Left type: VARCHAR, Right type: INT.
Add explicit casts to avoid this error
> {code}
> Here is an example query with which it is reproducible.
> {code}
> select * from cp.`sample-data/nation.parquet` nation left outer join dfs.tmp.`2.csv`
as two on two.a = nation.`N_COMMENT`;
> {code}
> the contents of 2.csv is empty (i.e not even header info).



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