This page states "New query-time joining is more flexible (but less performant) than index-time joins."
https://wiki.apache.org/lucene-java/Lucene3.6 However, I download Lucene 3.6.0 (and 3.6.1) and there is no mention of query-time join in the CHANGES.TXT. Also, I see no binaries for org.apache.lucene.search.join - though the API doc in the same download contains information about this package: lucene-3.6.0/docs/api/all/org/apache/lucene/search/join/package-frame.html Could someone please let me know what the story is with query time joins? Thanks!