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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12880) spark-assembly causes Hive class version problems
Date Sat, 30 Jan 2016 00:44:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124529#comment-15124529
] 

Xuefu Zhang commented on HIVE-12880:
------------------------------------

+1. Let's see if it has any impact on tests.

> spark-assembly causes Hive class version problems
> -------------------------------------------------
>
>                 Key: HIVE-12880
>                 URL: https://issues.apache.org/jira/browse/HIVE-12880
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Hui Zheng
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-12880.01.patch, HIVE-12880.02.patch, HIVE-12880.patch
>
>
> It looks like spark-assembly contains versions of Hive classes (e.g. HiveConf), and these
sometimes (always?) come from older versions of Hive.
> We've seen problems where depending on classpath perturbations, NoSuchField errors may
be thrown for recently added ConfVars because the HiveConf class comes from spark-assembly.
> Would making sure spark-assembly comes last in the classpath solve the problem?
> Otherwise, can we depend on something that does not package older Hive classes?
> Currently, HIVE-12179 provides a workaround (in non-Spark use case, at least; I am assuming
this issue can also affect Hive-on-Spark).



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