GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/7487
[SPARK-9150][SQL] Create a trait to track code generation for expressions
It is very hard to track which expression supports code generation or not.
This patch removes the default gencode implementation from Expression, and
moves the default fallback implementation into a new trait called
CodegenFallback. Each concrete expression needs to either implement code
generation, or mix in CodegenFallback.
This makes it very easy to track which expressions have code generation
implemented already.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark codegenfallback
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7487.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 #7487
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commit 75c370f5b7068ffb0505d249750590188f3a9bd0
Author: Reynold Xin <[email protected]>
Date: 2015-07-18T06:11:52Z
[SPARK-8240][SQL] string function: concat
commit 66bfbee81f3043fc86929ce665de2f842506c723
Author: Reynold Xin <[email protected]>
Date: 2015-07-18T06:12:34Z
Added missing file.
commit f9dce26747959f2999764f8453313086b67f3e87
Author: Reynold Xin <[email protected]>
Date: 2015-07-18T07:10:17Z
[SPARK-9150][SQL] Create a trait to track code generation for expressions.
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