Hi, I'm investigating installing a new Solr deployment to be able to search about two million documents (mostly HTML and PDF).
QUESTIONS: A. Should I use Solr 4.x or 5.x? My concerns are mostly to do with support. Is 5.x too new to be able to get good answers and advice from the community? Or should I stick with the latest 4.x release? B. Anyone have a good book recommendation? I was thinking of buying "Solr In Action" but it looks like it was published in April 2014 so it won't have any 5.x info in it? Thanks! Rob
