Since it was only 98% clear :-), here a summary of a short and easy
guide to trigger the issue in e.g. a container:
#1 install dovecot+lucene
sudo apt-get install dovecot-lucene
#2 configure lucene
sed -ie 's/#mail_plugins = $/mail_plugins = $mail_plugins fts fts_lucene/'
/etc/dovecot/conf.d/10-mail.conf
sed -ie 's/^plugin {$/plugin {\n fts = lucene\n fts_lucene =
whitespace_chars=@./' /etc/dovecot/conf.d/90-plugin.conf
#3 do soething with dovecot
service dovecot reload
doveadm pw -s SSHA256 -p verysecretindeed
Fatal: Couldn't load required plugin
/usr/lib/dovecot/modules/lib21_fts_lucene_plugin.so: dlopen() failed:
/usr/lib/dovecot/modules/lib21_fts_lucene_plugin.so: undefined symbol:
_ZN6lucene8analysis8snowball16SnowballAnalyzerC1EPFiPKvmP6bufferEPKc
Note that while it won't save us from this being a bug, the comment at
http://wiki2.dovecot.org/Plugins/FTS/Lucene is worth to note as a lucene user:
Quote: "NOTE: Although the fts-lucene plugin works, it's using CLucene library,
which is very old and has some bugs. It's a much better idea to use fts-solr
instead, which has much more features and is more stable."
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https://bugs.launchpad.net/bugs/1524526
Title:
Crashes with undefined symbol
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