Hello, I am using Solr in a distributed environment where I have split my collection into parts, which I have running on different nodes. When I create each part of the collection, I set numShards and replicationFactor to 1. The query speed is most important to us, and we are not worried about load on the system.
I want a Distributed IDF across all parts of the collection so I have added this line to my solrconfig.xml: <statsCache class="org.apache.solr.search.stats.ExactStatsCache" /> This seems to work about 90% of the time, but if I run the same request over and over again, sometimes I get scores with a local IDF for just one part of the collection. Here is a request example: /solr/collection1,collection2/query?q=fulltext:shark&rows=500&fl=id,url,title,score&sort=score+desc I still get documents from both collection1 and collection2, but sometimes I get scores that are the same as when I would just query collection1. I believe that it is only using the document frequency of collection one for the term in that case. Should I use a different configuration? I would like to make sure the IDF is always distributed and the same every time I run the same query. Is there any technique I could use to ensure that this happens? Thank you, Cameron VandenBerg
