GitHub user jinfengni opened a pull request:
https://github.com/apache/drill/pull/305
DRILL-4201 : Allow partial filter to be pushed down project for betteâ¦
â¦r performance.
Partial filter pushdown has performance benefits because:
1) enable partition pruning, if the pushed down involves partitioning
columns,
2) allow the filter to be applied in upper stream.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jinfengni/incubator-drill DRILL-4201
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/305.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 #305
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commit 68203ad035f65d1708ce228df432d5b23f4af3ba
Author: Jinfeng Ni <[email protected]>
Date: 2015-12-12T00:00:13Z
DRILL-4201 : Allow partial filter to be pushed down project for better
performance.
Partial filter pushdown has performance benefits because:
1) enable partition pruning, if the pushed down involves partitioning
columns,
2) allow the filter to be applied in upper stream.
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