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From "Bob Rumsby (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-1395) UNION ALL query fails "while setting up Foreman"
Date Wed, 10 Sep 2014 05:51:28 GMT
Bob Rumsby created DRILL-1395:

             Summary: UNION ALL query fails "while setting up Foreman"
                 Key: DRILL-1395
                 URL: https://issues.apache.org/jira/browse/DRILL-1395
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 0.5.0
            Reporter: Bob Rumsby

The two sides of the UNION are not equivalent because one of the files has an additional column,
but Aman tells me that this should work in a schema-less environment anyway. (I was expecting
it to fail but with a more meaningful error because I am used to relational database UNION
queries where a corresponding number of columns is expected on either side of the UNION operator.)

The query fails whether or not the LIMIT is applied. EXPLAIN for this query also fails.

0: jdbc:drill:> select * from `clicks/clicks.campaign.json` union all select * from `clicks/clicks.json`
limit 5;
Query failed: Failure while setting up Foreman. DrillUnionRel#23471 [159a4852-e190-4edf-b11e-2d62db8efbd7]

Error: exception while executing query: Failure while trying to get next result batch. (state=,code=0)

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