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https://issues.apache.org/jira/browse/SPARK-18134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17869944#comment-17869944
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Dongjoon Hyun commented on SPARK-18134:
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You can file a working PR to the Apache Spark repository in order to revive
this, [~rkchoudhary]. You can make a freshly new PR, or you can take over the
existing PR too. If you keep the existing authorship as the first commit and
add your commits later in a single PR, it's okay with the community.
bq. Let us know if there's anything we can do to assist in resolving this issue.
> 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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