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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-25398) Converted external tables should be able to configure purge behaviour
Date Wed, 28 Jul 2021 10:38:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-25398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ASF GitHub Bot updated HIVE-25398:
----------------------------------
    Labels: pull-request-available  (was: )

> Converted external tables should be able to configure purge behaviour
> ---------------------------------------------------------------------
>
>                 Key: HIVE-25398
>                 URL: https://issues.apache.org/jira/browse/HIVE-25398
>             Project: Hive
>          Issue Type: Bug
>          Components: Standalone Metastore
>            Reporter: Panagiotis Garefalakis
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Creating non-ACID MANAGED tables is not allowed on Hive, which is instead converting
these tables to External: https://issues.apache.org/jira/browse/HIVE-22158
> During table translation  both TRANSLATED_TO_EXTERNAL and 'external.table.purge' are
set to True. However, there could be the case that the second parameter is already set in
the table properties by the User. This is ticket is adding an extra check to maintain that
property if set.
> PS: A cleaner solution would be to create these Tables as External directly but there
could be the case the User is taking advantage of the translation and is expecting the data
NOT to be purged!
> Example:
> {code:java}
> -- Non-ACID table will be translated to EXTERNAL
> create table c(c int) LOCATION 'etp_1' TBLPROPERTIES('transactional'='false','external.table.purge'='false');
> insert into c values(1);
> -- Maintain the purge=false property set above
> desc formatted c;
> select count(*) from c;
> drop table c;
> -- Create table in same location, data should still be there
> create table c(c int) LOCATION 'etp_1' TBLPROPERTIES('transactional'='false','external.table.purge'='false');
> desc formatted c;
> select count(*) from c;
> {code}



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