GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/15606
[SPARK-18070][SQL] binary operator should not consider nullability when
comparing input types
## What changes were proposed in this pull request?
Binary operator requires its inputs to be of same type, but it should not
consider nullability, e.g. `EqualTo` should be able to compare an
element-nullable array and an element-non-nullable array.
## How was this patch tested?
a regression test in `DataFrameSuite`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark type-bug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15606.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 #15606
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commit ba880d8f954d29eb8bc62b4af3ced1b46aa78dc3
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2016-10-24T05:31:23Z
binary operator should not consider nullability when comparing input types
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