GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/15256
[SPARK-17682][SQL] Mark children as final for unary, binary, leaf
expressions and plan nodes
## What changes were proposed in this pull request?
This patch marks the children method as final in unary, binary, and leaf
expressions and plan nodes (both logical plan and physical plan), as brought up
in
http://apache-spark-developers-list.1001551.n3.nabble.com/Should-LeafExpression-have-children-final-override-like-Nondeterministic-td19104.html
## How was this patch tested?
This is a simple modifier change and has no impact on test coverage.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-17682
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15256.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 #15256
----
commit 8b01aada9c94b849aede61ef681153080cda89c2
Author: Reynold Xin <[email protected]>
Date: 2016-09-27T08:02:40Z
[SPARK-17682][SQL] Mark children as final for Unary, Binary, Leaf
expression and plan nodes
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