Hi, I am familiar with Lucene and trying out Solr.
I have index which was created outside solr. The index is fairly simple with two field - document_id & content. The query result needs to return all the document IDs. The result need not be ordered by the score. For this, in Lucene, I use custom hit collector with search to get results quickly. The index has a few million documents and queries returning hundreds of thousands of documents are not uncommon. So, the speed is crucial here. Since retrieving the document_id for each document is slow, I am using FileldCache to store the values of document_id. For all the results collected (in a bitset) with hit collector, document_id field is retrieved from the fieldcache. 1. How can I effectively disable scoring? I have read that ConstantScoreQuery is quite fast, but from the code, I see that it is used only for wildcard queries. How can I use ConstantScoreQuery for all the queries (boolean, term, phrase, ..)? Also, is ConstantScoreQuery as fast as a custom hit collector? 2. How can Solr take advantage of the fieldcache while returning the field document_id? The documentation says, fieldcache can be explicitly auto warmed with Solr. If fieldcache is available and initialized at the beginning, will solr look into the cache to retrieve the fields to be returned? 3. If there is an additional field for stemmed_content on which search needs to use different analyzer, I suppose, that could be specified by fieldType attribute in the schema. Thank you, --shashi
