GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/19062
[SPARK-21845] [SQL] Make codegen fallback of expressions configurable
## What changes were proposed in this pull request?
We should make codegen fallback of expressions configurable. So far, it is
always on. We might hide it when our codegen have compilation bugs. Thus, we
should also disable the codegen fallback when running test cases.
## How was this patch tested?
Added test cases
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark fallbackCodegen
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19062.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 #19062
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commit 9f3a1cd0c2e95bd6239facf3584d590a88aafce4
Author: gatorsmile <gatorsm...@gmail.com>
Date: 2017-08-26T22:16:02Z
fix.
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