GitHub user CodingCat opened a pull request:
https://github.com/apache/spark/pull/15595
[SPARK-18058][SQL] Comparing column types ignoring Nullability in
BinaryOperator
## What changes were proposed in this pull request?
The PR tries to fix
[SPARK-18058](https://issues.apache.org/jira/browse/SPARK-18058) which refers
to a bug that the column types are compared with the extra care about
Nullability in BinaryOperator.
This PR converts the columns types by setting all fields as nullable before
comparison
## How was this patch tested?
regular unit test cases
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/CodingCat/spark SPARK-18058
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15595.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 #15595
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commit 0e38e287e05d404f9775ea8545ee2de31a995e5a
Author: CodingCat <zhunans...@gmail.com>
Date: 2016-03-07T14:37:37Z
improve the doc for "spark.memory.offHeap.size"
commit c714bb461f776c81a41cad15a384bae574a4db3c
Author: CodingCat <zhunans...@gmail.com>
Date: 2016-03-07T19:00:16Z
fix
commit c62f84fd396fa6ec07818bc02dfe4cce9abe909f
Author: CodingCat <zhunans...@gmail.com>
Date: 2016-10-22T01:05:10Z
compare the column types ignoring the nullability
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