GitHub user iksaif opened a pull request:
https://github.com/apache/cassandra/pull/85
sasi: AND optimizations
when op is AND:
- do not use indexes that return way more results that the others
- do not use more indexes if one of them returns no results
- try to use something smarter to get the primary index (which is
important because it limits the searches done on other indexes)
Cosmetic changes such as changing logger.debug() to logger.trace() will be
done later, I'd like a first opinion on the concept.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/iksaif/cassandra cassandra-3.X
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/cassandra/pull/85.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 #85
----
commit bc54f7ae176e9314190c49d1780fb87e26b62728
Author: Corentin Chary <c.ch...@criteo.com>
Date: 2016-11-21T16:04:42Z
sasi: AND optimizations
when op is AND:
- do not use indexes that return way more results that the others
- do not use more indexes if one of them returns no results
- try to use something smarter to get the primary index (which is
important because it limits the searches done on other indexes)
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