GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/7174
[SPARK-8770][SQL] Create BinaryOperator abstract class.
Our current BinaryExpression abstract class is not for generic binary
expressions, i.e. it requires left/right children to have the same type.
However, due to its name, contributors build new binary expressions that don't
have that assumption (e.g. Sha) and still extend BinaryExpression.
This patch creates a new BinaryOperator abstract class, and update the
analyzer o only apply type casting rule there. This patch also adds the notion
of "prettyName" to expressions, which defines the user-facing name for the
expression.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark binary-opterator
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7174.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 #7174
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commit d8518cfb7d9ccfbf26ef4875f70d7bc1434464d6
Author: Reynold Xin <[email protected]>
Date: 2015-07-02T02:27:38Z
Updated Python tests.
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