GitHub user bravo-zhang opened a pull request:
https://github.com/apache/spark/pull/16365
[SPARK-18950][SQL] Report conflicting fields when merging two StructTypes
## What changes were proposed in this pull request?
Currently, StructType.merge() only reports data types of conflicting fields
when merging two incompatible schemas. It would be nice to also report the
field names for easier debugging.
## How was this patch tested?
Unit test in DataTypeSuite.
Print exception message when conflict is triggered.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bravo-zhang/spark spark-18950
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16365.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 #16365
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commit 9bc9f8a94d0c910f4fa795a4d05d6606fa35b1bc
Author: bravo-zhang <[email protected]>
Date: 2016-12-20T23:57:21Z
[SPARK-18950][SQL] Report conflicting fields when merging two StructTypes
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