GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/18839
[SPARK-21634][SQL] Change OneRowRelation from a case object to case class
## What changes were proposed in this pull request?
OneRowRelation is the only plan that is a case object, which causes some
issues with makeCopy using a 0-arg constructor. This patch changes it from a
case object to a case class.
This blocks SPARK-21619.
## How was this patch tested?
Should be covered by existing test cases.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-21634
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18839.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 #18839
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commit 23efcc687aabf8bebcf3d1a2647b60ca059f9d55
Author: Reynold Xin <r...@databricks.com>
Date: 2017-08-04T03:39:34Z
[SPARK-21634][SQL] Change OneRowRelation from a case object to case class
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