On Wed, 2013-10-23 at 04:26 +0200, dboychuck wrote: > I recently moved an index from 3.6 non-distributed to Solr Cloud 4.4 with > three shards. My company uses a boosting function with a value assigned to > each document. This boosting function no longer works dependably and I > believe the cause is that IDF is not distributed. > > This seems like it should be a high priority for Solr Cloud.
It has been relevant for several years, well before SolrCloud. We run a mixed environment (Lucene/Solr/external index) and hacked a kinda-sorta distributed IDF together by boosting the search terms, but it is a poor man's solution. Distributed IDF for Solr is a very old JIRA issue, dating back to 2009: https://issues.apache.org/jira/browse/SOLR-1632 Activity has been on/off and I can see that it was last updated in June, but I have no idea of how close it is to completion. If you want anything out-of-the-box at this time, you'll have to look at Elasticsearch, which has this feature. - Toke Eskildsen, State and University Library, Denmark
