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https://issues.apache.org/jira/browse/SPARK-18134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648880#comment-16648880
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jin xing commented on SPARK-18134:
----------------------------------
[~maropu]
I split this JIRA to two subtasks: SPARK-25724 and SPARK-25725 and submitted a
pr to SPARK-25724.
Please take a look when you have time.
> SQL: MapType in Group BY and Joins not working
> ----------------------------------------------
>
> Key: SPARK-18134
> URL: https://issues.apache.org/jira/browse/SPARK-18134
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 2.0.0, 2.0.1,
> 2.1.0
> Reporter: Christian Zorneck
> Priority: Major
>
> Since version 1.5 and issue SPARK-9415, MapTypes can no longer be used in
> GROUP BY and join clauses. This makes it incompatible to HiveQL. So, a Hive
> feature was removed from Spark. This makes Spark incompatible to various
> HiveQL statements.
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