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From "Miklos Gergely (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-21897) Setting serde / serde properties for partitions
Date Thu, 20 Jun 2019 08:49:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-21897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16868359#comment-16868359
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Miklos Gergely commented on HIVE-21897:
---------------------------------------

As discussed with [~kgyrtkirk], this is not ok. We've checked it in the sys db, and also it
shows that the SerDe is the same for the whole table and all partitions. For now let's reject
such statements. In the future release we may start to have such a feature.

> Setting serde / serde properties for partitions
> -----------------------------------------------
>
>                 Key: HIVE-21897
>                 URL: https://issues.apache.org/jira/browse/HIVE-21897
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 3.1.1
>            Reporter: Miklos Gergely
>            Assignee: Miklos Gergely
>            Priority: Major
>             Fix For: 4.0.0
>
>
> According to [https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-AddSerDeProperties] the
SerDe and the SerDe properties can be set for a partition too, so
>  
> {code:java}
> ALTERT TABLE table PARTITION (partition_col='partition_value') SET SERDE 'serde.class.name';{code}
> Is a valid statement. In fact it is not rejected, but it is not doing anything at all.
The execution is successful, everything remains the same. The same is true for setting the
serde properties:
> {code:java}
> ALTER TABLE table PARTITION (partition_col='partition_value') SET SERDEPROPERTIES ('property_name'='property_value');{code}
> is also a valid statement, and not doing anything.
> I suggest to modify the parser, and reject these statements. SerDe is for a table, and
not for a partition.
>  



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