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Posted to dev@quickstep.apache.org by jianqiao <gi...@git.apache.org> on 2017/05/04 23:34:27 UTC
[GitHub] incubator-quickstep pull request #246: Improve disjunctive predicate pushdow...
GitHub user jianqiao opened a pull request:
https://github.com/apache/incubator-quickstep/pull/246
Improve disjunctive predicate pushdown to optimize more scenarios
This PR improves the `PushDownLowCostDisjunctivePredicate` optimization to consider more applicable scenarios -- precisely it will push down the partial predicate when it has a low selectivity. This results in 4X speedup for TPC-H Q19.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-quickstep improve-pushdown
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/246.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 #246
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commit ed72e2477033438e922195aa2632003ab037ab7b
Author: Jianqiao Zhu <ji...@cs.wisc.edu>
Date: 2017-05-03T04:55:52Z
Improve disjunctive predicate pushdown to optimize more scenarios.
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[GitHub] incubator-quickstep pull request #246: Improve disjunctive predicate pushdow...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/incubator-quickstep/pull/246
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[GitHub] incubator-quickstep issue #246: Improve disjunctive predicate pushdown to op...
Posted by zuyu <gi...@git.apache.org>.
Github user zuyu commented on the issue:
https://github.com/apache/incubator-quickstep/pull/246
LGTM!
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