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https://issues.apache.org/jira/browse/HIVE-23442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17105351#comment-17105351
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Marta Kuczora commented on HIVE-23442:
--------------------------------------
Pushed to master.
Thanks a lot [~pvary] for the review!
> ACID major compaction doesn't read base directory correctly if it was written
> by insert overwrite
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-23442
> URL: https://issues.apache.org/jira/browse/HIVE-23442
> Project: Hive
> Issue Type: Bug
> Affects Versions: 4.0.0
> Reporter: Marta Kuczora
> Assignee: Marta Kuczora
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-23442.1.patch, HIVE-23442.2.patch
>
>
> Steps to reproduce:
> {noformat}
> SET hive.acid.direct.insert.enabled=true;
> CREATE EXTERNAL TABLE test_comp_txt(a int, b int, c int) STORED AS TEXTFILE;
> INSERT INTO test_comp_txt values (1, 1, 1), (2, 2, 2), (3, 3, 3), (4, 4, 4);
> CREATE TABLE test_comp(a int, b int, c int) STORED AS ORC
> TBLPROPERTIES('transactional'='true');
> INSERT OVERWRITE TABLE test_comp SELECT * FROM test_comp_txt;
> UPDATE test_comp SET b=55, c=66 WHERE a=2;
> DELETE FROM test_comp WHERE a=4;
> UPDATE test_comp SET b=77 WHERE a=1;
> SELECT * FROM test_comp;
> 3 3 3
> 2 55 66
> 1 77 1
> ALTER TABLE test_comp COMPACT 'MAJOR';
> SELECT * FROM test_comp;
> 2 55 66
> 1 77 1
> {noformat}
> This issue only occurs if the base directory was created with an insert
> overwrite command and the hive.acid.direct.insert.enabled parameter was true.
> This issue doesn't affect the query based compaction.
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