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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14322) Postgres db issues after Datanucleus 4.x upgrade
Date Sun, 24 Jul 2016 06:46:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15390973#comment-15390973
] 

Thejas M Nair commented on HIVE-14322:
--------------------------------------

Setting DN autocreate flag to true also helps, but that means going back on the changes in
HIVE-1841. I think we should continue to disable autocreate and use schematool instead. So
this is not a suitable workaround.

Until we have a fix in DN for this, I think we should downgrade the DN version  in hive to
allow the use of postgres.
I will follow up with a bug in DN as well.



> Postgres db issues after Datanucleus 4.x upgrade
> ------------------------------------------------
>
>                 Key: HIVE-14322
>                 URL: https://issues.apache.org/jira/browse/HIVE-14322
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 2.1.0, 2.0.1
>            Reporter: Thejas M Nair
>            Assignee: Thejas M Nair
>
> With the upgrade to  datanucleus 4.x versions in HIVE-6113, hive does not work properly
with postgres.
> The nullable fields in the database have string "NULL::character varying" instead of
real NULL values. This causes various issues.
> One example is -
> {code}
> hive> create table t(i int);
> OK
> Time taken: 1.9 seconds
> hive> create view v as select * from t;
> OK
> Time taken: 0.542 seconds
> hive> select * from v;
> FAILED: SemanticException Unable to fetch table v. java.net.URISyntaxException: Relative
path in absolute URI: NULL::character%20varying
> {code}



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