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
Several weeks ago Heliosearch v.08 was released, which included an early release of the Streaming Aggregation API. One of the main design goals for the Streaming API was to provide the foundation for the Heliosearch SQL Sub-Project. The Streaming API … Continued
Introduction Tuples, TupleStreams and Sorted Streams SolrStream Stream Decorators Streaming Set Operations Streaming Aggregation Distributed Searching, Sorting and Streaming: CloudSolrStream A Bottleneck Rears It’s Ugly Head! Distributed Aggregation: ParallelStream Scaling-up With SolrCloud Replicas Introduction This blog describes the new … 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 the last couple of posts, I introduced the RankQuery API and the AnalyticsQuery API. The RankQuery API allows developers to plug-in custom ranking algorithms to Solr and the AnalyticsQuery API allows developers to plug-in custom analytic logic to Solr. … 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
