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From "Hanumath Rao Maduri (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5851) Empty table during a join operation with a non empty table produces cast exception
Date Fri, 06 Oct 2017 23:44:00 GMT
Hanumath Rao Maduri created DRILL-5851:
------------------------------------------

             Summary: 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


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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