GitHub user osma opened a pull request:
https://github.com/apache/jena/pull/205
JENA-1277: don't use sorting in spatial queries, for much better performance
This PR proposes removing the `distSort` parameter from the Lucene spatial
query performed by jena-spatial. Dropping the sorting gives a massive
performance boost; in the Geonames example given in JENA-1277, the query time
drops from over 20 seconds to less than 200 ms.
I suppose that the sorting is not necessary since jena-spatial results are
just raw material for the SPARQL engine anyway.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/osma/jena jena-spatial-no-sort
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/jena/pull/205.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 #205
commit 864e2ce831f41a15ba683d0edd29cbe3236ff636
Author: Osma Suominen
Date: 2017-01-13T12:29:16Z
JENA-1277: don't use sorting in spatial queries, for much better performance
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