GitHub user bogdanrdc opened a pull request:
https://github.com/apache/spark/pull/16608
[SPARK-13721][SQL] Support outer generators in DataFrame API
## What changes were proposed in this pull request?
Added outer_explode, outer_posexplode, outer_inline functions and
expressions.
Some bug fixing in GenerateExec.scala for CollectionGenerator. Previously
it was not correctly handling the case of outer with empty collections, only
with nulls.
## How was this patch tested?
New tests added to GeneratorFunctionSuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bogdanrdc/spark SPARK-13721
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16608.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #16608
----
commit 62f46f6ab62e04cf2cc5958d67437d8626cef309
Author: Bogdan Raducanu <bogdan....@gmail.com>
Date: 2017-01-16T17:00:25Z
Added outer_explode, outer_posexplode, outer_inline
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