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From "Denys Kuzmenko (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-22945) Hive ACID Data Corruption: Update command mess the other column data and produces incorrect result
Date Thu, 05 Mar 2020 23:03:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-22945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Denys Kuzmenko updated HIVE-22945:
----------------------------------
    Status: Patch Available  (was: Open)

> Hive ACID Data Corruption: Update command mess the other column data and produces incorrect
result
> --------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-22945
>                 URL: https://issues.apache.org/jira/browse/HIVE-22945
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, Transactions
>    Affects Versions: 3.2.0
>            Reporter: Rajkumar Singh
>            Assignee: Denys Kuzmenko
>            Priority: Critical
>         Attachments: HIVE-22945.1.patch
>
>
> Hive Update Operation update the other column incorrectly and produces incorrect results:
> Steps to reproduce:
> {code:java}
> CREATE TABLE `test`(
>   `start_dt` timestamp, 
>   `stop_dt` timestamp
>   );
>   
> INSERT INTO test (start_dt, stop_dt) SELECT  CURRENT_TIMESTAMP, CAST(NULL AS TIMESTAMP);
> select * from test; 
> +--------------------------+---------------+
> |      test.start_dt       | test.stop_dt  |
> +--------------------------+---------------+
> | 2020-02-28 20:06:29.116  | NULL          |
> +--------------------------+---------------+
> UPDATE test SET STOP_DT = CURRENT_TIMESTAMP WHERE CAST(START_DT AS DATE) = CURRENT_DATE;
> +------------------------+--------------------------+
> |     test.start_dt      |       test.stop_dt       |
> +------------------------+--------------------------+
> | 2020-02-28 00:00:00.0  | 2020-02-28 20:07:12.248  |
> +------------------------+--------------------------+
> {code}



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