SOLR-4.0 I am trying to implement this; funny idea to share:
1. http://wiki.apache.org/solr/HierarchicalFaceting unfortunately it does not support date ranges. However, workaround: use "String" type instead of "*_tdt" and define fields such as published_hour published_day published_week Of course you will need to stick with timezone; but you can add an index(es) for each timezone. And most important, "string" facets are much faster than "Date Trie" ranges. 2. Our index is overs 100 millions (from social networks) and rapidly grows (millions a day); cache warm up takes few minutes; Near-Real-Time does not work with faceting. However another workaround: we can have Daily Core (optimized at midnight), plus Current Core (only today's data, optimized), plus Last Hour Core (near real time) "Last Hour Data" is small enough and we can use Facets with Near Real Time feature Service layer will accumulate search results from three layers, it will be near real time. Any thoughts? Thanks, -- Fuad Efendi 416-993-2060 Tokenizer Inc., Canada http://www.tokenizer.ca http://www.linkedin.com/in/lucene
