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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14309) Fix naming of classes in orc module to not conflict with standalone orc
Date Sat, 23 Jul 2016 00:11:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15390391#comment-15390391
] 

Gunther Hagleitner commented on HIVE-14309:
-------------------------------------------

I've looked at the classes that would be impacted. If I'm not mistaken you're talking about
100 classes which are pretty much all of ORC. 70 of those are non-test classes. Since hive
used to be until very recently the only source of orc I also don't see a way to guarantee
that no one else is using these classes and wouldn't be affected by changing this on released
lines going back over 6 months.

I also get that you don't want to change those in ORC upstream now. That would mean you have
to move a lot of stuff out of the way.

As a consequence I think the best thing to do is nothing for 2.0 and 2.1. If someone wants
to use ORC with hive on the classpath in those versions they should probably just use the
hive classes. Starting with hive 2.2 they will be able to switch to ORC proper. If they absolutely
must suck in the new ORC project they should probably shade it in their code for the time
being. That also will get them over the hump.


> Fix naming of classes in orc module to not conflict with standalone orc
> -----------------------------------------------------------------------
>
>                 Key: HIVE-14309
>                 URL: https://issues.apache.org/jira/browse/HIVE-14309
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>
> The current Hive 2.0 and 2.1 releases have classes in the org.apache.orc namespace that
clash with the ORC project's classes. From Hive 2.2 onward, the classes will only be on ORC,
but we'll reduce the problems of classpath issues if we rename the classes to org.apache.hive.orc.
> I've looked at a set of projects (pig, spark, oozie, flume, & storm) and can't find
any uses of Hive's versions of the org.apache.orc classes, so I believe this is a safe change
that will reduce the integration problems down stream.



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