Considering two crashing bugs, which have got no response (https://sourceforge.net/tracker/?func=detail&aid=3587525&group_id=80013&atid=558446 and https://sourceforge.net/tracker/?func=detail&aid=3592291&group_id=80013&atid=558446) and the lack of activity in its Git repository, I am inclined to think that CLucene's current release series (e.g. 2.3.3.4) should be considered unsuitable for serious use (including with Dovecot). I'm going to try CLucene 0.9.21, which they claim has been "proven to be stable over time" (see http://clucene.sourceforge.net), and see how it works out.
I wonder if there's a future envisioned for FTS with Dovecot that's suitable for small installations (i.e. doesn't require a Solr server) and has a good chance of correctness and stability?
-- Dave Abrahams BoostPro Computing Software Development Training http://www.boostpro.com Clang/LLVM/EDG Compilers C++ Boost