doveadm index message-decoder assertion failed

[cs+dovecot at ctzen.com]

Hi,

I've setup FTS using lucene and it should be working, the lucene index 
is updated when mail arrives.

I also managed to reindex my INBOX: doveadm index -u foo -q INBOX

However, when I try to index an Archives folder: doveadm index -u foo -q 
Archives, the index-work crashed with this log message:

dovecot: indexer-worker(foo): Panic: file message-decoder.c: line 363 
(message_decode_body): assertion failed: (ctx->translation_size <= 
sizeof(ctx->translation_buf))
dovecot: indexer: Error: Indexer worker disconnected, discarding 1 
requests for foo
dovecot: indexer-worker(foo): Fatal: master: service(indexer-worker): 
child 28730 killed with signal 6 (core dumps disabled)

The Archives folder has 22317 messages.

Please help.


dovecot --version
2.2.15


dovecot -n
# 2.2.15: /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 10.0-STABLE i386
auth_username_format = %Ln
first_valid_gid = 1000
first_valid_uid = 1000
login_trusted_networks = xxx.xxx.xxx.x/24
mail_location = maildir:~/Maildir
mail_plugins = " fts fts_lucene"
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope 
encoded-character vacation subaddress comparator-i;ascii-numeric 
relational regex imap4flags copy include variables body enotify 
environment mailbox date ihave duplicate
namespace inbox {
   inbox = yes
   location =
   mailbox Drafts {
     special_use = \Drafts
   }
   mailbox Junk {
     special_use = \Junk
   }
   mailbox Sent {
     special_use = \Sent
   }
   mailbox "Sent Messages" {
     special_use = \Sent
   }
   mailbox Trash {
     special_use = \Trash
   }
   prefix =
}
passdb {
   driver = pam
}
plugin {
   antispam_backend = spool2dir
   antispam_spam = Junk
   antispam_spool2dir_notspam = 
/var/spool/dovecot-antispam/queue/ham-%%020lu-%u-%%05lu
   antispam_spool2dir_spam = 
/var/spool/dovecot-antispam/queue/spam-%%020lu-%u-%%05lu
   antispam_trash = Trash
   fts = lucene
   fts_autoindex = yes
   fts_lucene = whitespace_chars=@.
}
protocols = imap lmtp sieve
service imap-login {
   inet_listener imap {
     address = xxx.xxx.xxx.x
   }
   inet_listener imaps {
     address = xxx.xx.xx.xx
   }
}
service lmtp {
   unix_listener /var/spool/postfix/private/dovecot-lmtp {
     group = postfix
     mode = 0660
     user = postfix
   }
}
service managesieve-login {
   inet_listener sieve {
     address = xxx.xx.xx.xx xxx.xxx.xx.x
     port = 4190
   }
}
ssl_cert = </var/ssl/crts/mail.crt
ssl_key = </var/ssl/keys/ssl-npp.key
userdb {
   driver = passwd
}
protocol lmtp {
   mail_plugins = " fts fts_lucene sieve"
}
protocol imap {
   mail_max_userip_connections = 20
   mail_plugins = " fts fts_lucene antispam"
}