[Dovecot] Solr 4.0 - lucene - FTS

[Charles Marcus]

On 2012-11-07 10:14 AM, Timo Sirainen <tss at iki.fi> wrote:
> No, fts-lucene and fts-solr are separate backends. But I do have some small plans to add a few more features to fts-solr.

Thanks again Timo, but one last follow-up...

According to the wiki, Solr is the preferred method, but that seems 
weird to me - it requires a full blown Solr server that dovecot 
communicates with using HTTP/XML queries? Maybe not that big a deal, but 
just sounds like overkill to me, unless you are maybe already using Solr 
for website searches (which I'm not and have no need for). I would much 
prefer something simpler that doesn't require any external dependencies 
like that, so, next choice is Lucene...

Looks much simpler, only requires Lucene's C++ library...

But it builds only a single Lucene index for all mailboxes - not sure if 
this is good or bad? Seems like it would be better/more efficient (and 
less chance of index corruption, but most importantly, less overhead in 
the event that one gets hosed and dovecot needs to rebuild it) to build 
individual indexes for each mailbox, then, maybe, to provide support for 
searching ALL mailboxes, have a master index that basically just 
maintains a list of all of the individual indexes to be used for the 
search (so it doesn't have to scan all available mailboxes, but which it 
can do in the event that *it* ever got hosed).

Obviously I don't know much about all this, so may be totally off base...

Thanks again, and for listening to my ramblings,

-- 

Best regards,

Charles