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From hvanhovell <>
Subject [GitHub] spark pull request #16886: [SPARK-19548][SQL] Support Hive UDFs which return...
Date Fri, 10 Feb 2017 11:26:56 GMT
GitHub user hvanhovell opened a pull request:

    [SPARK-19548][SQL] Support Hive UDFs which return typed Lists/Maps

    ## What changes were proposed in this pull request?
    This PR adds support for Hive UDFs that return fully typed java Lists or Maps, for example
`List<String>` or `Map<String, Integer>`.  It is also allowed to nest these structures,
for example `Map<String, List<Integer>>`. Raw collections or collections using
wildcards are still not supported, and cannot be supported due to the lack of type information.
    ## How was this patch tested?
    Modified existing tests in `HiveUDFSuite`, and I have added test cases for raw collection
and collection using wildcards.

You can merge this pull request into a Git repository by running:

    $ git pull SPARK-19548

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #16886
commit 56cdabdd0d19d6a07229202e939c8bd5beef4b12
Author: Herman van Hovell <>
Date:   2017-02-10T11:21:02Z

    Support Hive UDFs which return typed Lists/Maps


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