GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/6152
[SPARK-6444][SQL] Check argument types for SQL functions
it's based on https://github.com/apache/spark/pull/4685, but didn't take in
the optimization of avoding lazy val(we can do it in a seperate PR)
The code may looks complicated as I try to abstract some common patterns to
reduce code size:
* abstract the usage of holding a lazy val of Numeric or Ordering
* abstract the constraint of type equals for left and right child
* abstract the type check for numeric, bitwise, ordering, etc.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark 6444
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6152.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 #6152
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commit 7da79b26e8a700ab939f6d24cee57b118ce1b11f
Author: Wenchen Fan <[email protected]>
Date: 2015-05-14T17:16:09Z
check argument types for SQL functions
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