GitHub user fhueske opened a pull request:
https://github.com/apache/flink/pull/1798
[FLINK-3503] [tableAPI] Add cost model for DataSet RelNodes to improve plan
selection
Calcite's default cost model does not take IO and CPU into account. As a
consequence, projections are not pushed down (as described in FLINK-3503).
This PR adds a basic cost model to push filters and projections towards the
sources.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fhueske/flink tableRules
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1798.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 #1798
----
commit 257b6b0162c4f426042bbbb6f9bb4812dc8a4e81
Author: Fabian Hueske <[email protected]>
Date: 2016-03-14T18:57:53Z
[FLINK-3503] [tableAPI] Add cost model for DataSet RelNodes to improve plan
selection.
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