GitHub user nongli opened a pull request:
https://github.com/apache/spark/pull/11792
[SPARK-13981][SQL] Defer evaluating variables within Filter operator.
## What changes were proposed in this pull request?
This improves the Filter codegen to defer loading variables within the
generated
filter code. This is useful since the filter logic naturally short circuits
and
the deferred logic doesn't need to be run.
## How was this patch tested?
On tpcds q55, this fixes the regression from introducing the IsNotNull
predicates.
```
TPCDS Snappy: Best/Avg Time(ms) Rate(M/s) Per
Row(ns)
--------------------------------------------------------------------------------
q55 (master) 5562 / 5822 20.7
48.3
q55 (this patch) 5079 / 5190 22.7
44.1
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/nongli/spark spark-13981
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11792.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 #11792
----
commit 29e408d61f3557b1c5df343d039ef74d1c6e9ab3
Author: Nong Li <[email protected]>
Date: 2016-03-17T19:55:02Z
[SPARK-13981][SQL] Defer evaluating variables within Filter operator.
This improves the Filter codegen to defer loading variables within the
generated
filter code. This is useful since the filter logic naturally short circuits
and
the deferred logic doesn't need to be run.
On tpcds q55, this fixes the regression from introducing the IsNotNull
predicates.
TPCDS Snappy: Best/Avg Time(ms) Rate(M/s) Per
Row(ns)
--------------------------------------------------------------------------------
q55 (master) 5562 / 5822 20.7
48.3
q55 (this patch) 5079 / 5190 22.7
44.1
----
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