Aihua Xu created HIVE-11194:
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Summary: 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
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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