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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2009/07/03 15:44:47 UTC
[jira] Commented: (LUCENE-1732) Multi-threaded Spatial Search
[ https://issues.apache.org/jira/browse/LUCENE-1732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12726965#action_12726965 ]
Uwe Schindler commented on LUCENE-1732:
---------------------------------------
As it breaks backwards compatibility, could you use o.a.l.util.NumericUtils instead of NumberUtils and remove the class. Using this class, all numeric values use the same encoding coming from Lucene core. This is a new approach for numeric range queries, but the number format can also be used for Spatial's Tier encoding.
I could then close LUCENE-1505.
> Multi-threaded Spatial Search
> -----------------------------
>
> Key: LUCENE-1732
> URL: https://issues.apache.org/jira/browse/LUCENE-1732
> Project: Lucene - Java
> Issue Type: Improvement
> Components: contrib/spatial
> Affects Versions: 2.9
> Reporter: Chris Male
> Attachments: LUCENE-1732_multi_threaded_spatial_search.patch
>
>
> The attached patch is a large refactoring of the spatial search contrib. The primary contribution is the creation of the ThreadedDistanceFilter, which uses an ExecutorService to filter the documents in multiple threads. As a result of doing the filtering in multiple threads, the time taken to filter 1.2 million documents has been reduced from nearly 3s, to between 500-800ms.
> As part of this work, the DistanceQueryBuilder has been replaced by the SpatialFilter, a Lucene Filter, some unused functionality has been removed, and the package hierarchy has changed. Consequently this patch breaks backwards compatibility with the existing spatial search contrib.
> Also during the process of making these changes, abstractions have been added so that the one implementation of the ThreadedDistanceFilter can work with lat/long and geohash data formats, and so that precise but costly arc distance calculations can be replaced by less precise but much more efficient flat plane calculations if needed.
> This patch will be used in an upcoming patch for Solr which will improve Solr's support for spatial search.
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