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https://issues.apache.org/jira/browse/HIVE-11194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14624920#comment-14624920
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Chao Sun commented on HIVE-11194:
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Committed to master and branch-1. Thanks Aihua!
> Exchange partition on external tables should fail with error message when
> target folder already exists
> ------------------------------------------------------------------------------------------------------
>
> Key: HIVE-11194
> URL: https://issues.apache.org/jira/browse/HIVE-11194
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.0.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Fix For: 1.3.0, 2.0.0
>
> Attachments: HIVE-11194.patch
>
>
> Steps to repro:
> {noformat}
> Create /data/a1/pkey=1 directory with some data in it.
> Create /data/a2/pkey=1 directory with some data in it.
> create external table a1 (value string) partitioned by (pkey int) location
> '/data/a1';
> create external table a2 (value string) partitioned by (pkey int) location
> '/data/a2';
> alter table a2 add partition (pkey=1);
> alter table a1 exchange partition (pkey=1) with table a2;
> select * from a1 should now fail.
> {noformat}
> pkey=1 is not a partition of a1 but the folder exists. We should give an
> error message for that.
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