I found the issue. It had to do with edismax "qf" entry in request handler. I
had the following entry :
name_fra^1.2 title_fra^10.0 description_fra^5.0
author^1
Except for author, all other fields are of type adsktext_fra, while author
was of the type text_general, which uses english stopfilter
Turned out to be a weird exception. Apparently, the comments in the
stopwords_fr.txt disrupts the stop filter factory. After I stripped off the
comments, it worked as expected.
Referred to this thread :
http://mail-archives.apache.org/mod_mbox/lucene-dev/201309.mbox/%3CJIRA.12668581.1379112889603