GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/13208
[SPARK-14990][SQL] Fix checkForSameTypeInputExpr (ignore nullability)
## What changes were proposed in this pull request?
This patch fixes a bug in TypeUtils.checkForSameTypeInputExpr. Previously
the code was testing on strict equality, which does not taking nullability into
account.
This is based on https://github.com/apache/spark/pull/12768. This patch
fixed a bug there (with empty expression) and added a test case.
## How was this patch tested?
Added a new test suite and test case.
Closes #12768.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-14990
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13208.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 #13208
----
commit 0e4464cd332c056f2798d31663804144723db26b
Author: Oleg Danilov <[email protected]>
Date: 2016-04-28T22:00:26Z
[SPARK-14990][SQL] nvl, coalesce, array functions with parameter of type
'array'
commit 7011995fa70e54abeb253615d38fb75886b57f05
Author: Reynold Xin <[email protected]>
Date: 2016-05-20T01:20:52Z
Merge pull request #12768 from dosoft/SPARK-14990
[SPARK-14990][SQL] nvl, coalesce, array with parameter of type 'array'
commit 2ad10ee6cd96edf4d7f719ab7cd46a1cafa4be4e
Author: Reynold Xin <[email protected]>
Date: 2016-05-20T01:29:40Z
[SPARK-14990][SQL] Fix checkForSameTypeInputExpr by ignoring nullability.
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