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https://issues.apache.org/jira/browse/HIVE-13191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15372598#comment-15372598
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Jesus Camacho Rodriguez commented on HIVE-13191:
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[~ashutoshc], yes, sorry about that; I tried with autoconvert set to true, but
not on Tez. Indeed this problem is still there on Tez.
> DummyTable map joins mix up columns between tables
> --------------------------------------------------
>
> Key: HIVE-13191
> URL: https://issues.apache.org/jira/browse/HIVE-13191
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Pengcheng Xiong
> Attachments: tez.q
>
>
> {code}
> SELECT
> a.key,
> a.a_one,
> b.b_one,
> a.a_zero,
> b.b_zero
> FROM
> (
> SELECT
> 11 key,
> 0 confuse_you,
> 1 a_one,
> 0 a_zero
> ) a
> LEFT JOIN
> (
> SELECT
> 11 key,
> 0 confuse_you,
> 1 b_one,
> 0 b_zero
> ) b
> ON a.key = b.key
> ;
> 11 1 0 0 1
> {code}
> This should be 11, 1, 1, 0, 0 instead.
> Disabling map-joins & using shuffle-joins returns the right result.
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