Solr 5 is on it’s way and along with it comes a shiny new implementation of Collapse & Expand. The general functionality remains the same but the performance characteristics have changed. This blog provides a guide to getting the best … Continued
Lucene/Solr trunk (the future 6.0 release) is now on Java8, while version 5.x is still on Java7. Linux and Windows allows one to install a JDK any place in the filesystem, and I use the convention of installing in /opt/jdk7 … Continued
Starting with Solr 4.10, Solr has the ability to sort and export entire result sets. This new feature allows Solr to be used as a general purpose distributed sorting engine. Use Cases This new capability opens up Solr for a … Continued
Solr 4.9 unleashes Solr’s uniquely powerful Custom Analytics Engine. In recent blogs I wrote about the nuts and bolts of the new AnalyticsQuery API and MergeStrategy API. This blog is a high level look at that power that these API’s … Continued
In Solr 4.9 there is a new AnalyticsQuery API that allows developers to plug custom analytic logic into Solr. The AnalyticsQuery class provides a clean and simple API that gives developers access to all the rich functionality in Lucene and … Continued
In my last blog, I discussed Solr’s new RankQuery capability, which allows developers to take full control of the ranking process. The new ReRankingQParserPlugin leverages the RankQuery framework to hook in Lucene’s new QueryRescorer. Query Re-Ranking Explained: Solr offers a … Continued
Coming in Solr 4.9 is a new RankQuery API. Before diving into how the RankQuery API works, I’ll give a little background into how ranking works in Lucene/Solr. A Lucene search can have three parts to it: 1) A Query: … Continued
In my last blog, I explained how to use the ExpandComponent to expand the groups that were collapsed with the CollapsingQParserPlugin. In this blog I’ll explain how to expand the parent/child relationship of a Solr block join. First the data: … Continued
Solr 4.7 has been released! Here’s a slightly more in-depth overview of some selected features. Deep Paging Both single node, and distributed deep paging have been added to Solr! I previously created an example of how to use Solr’s deep … Continued
Sometimes a small programming change can have a big impact on functionality. This is the case with SOLR-5541, which allows the QueryElevationComponent to accept elevate and exclude Id’s as http parameters. Now you have complete control over the most important … Continued
