Hello, I'm interested in FederatedSearch on wiki:
http://wiki.apache.org/solr/FederatedSearch I would like to understand the design concept of this article properly, and I have some questions: 1. What does "multi-step" mean? e.g. Nice to haves: Retain ability to have complex *multi-step* query handler plugins Complex Federation total consistency for *multi-step* requests total consistency for any global idf calculations (a *multi-step* process) 2. It seems that "consistency" is one of key concept in Complex Federation, but I don't really understand it. In other words, I don't understand what inconvenience we will face if the request handler doesn't guarantee that the view of the index does not change during a single request. Does it mean that the merger's request handler needs two or more RPCs to respective subsearchers for a single request? 3. Will SolrMultiSearcher have caches? (filter, queryResult, and document) Thanks in advance, Koji
