Not really, as the steps outlined by Timo would not get done. Aki
> On 17 February 2019 at 10:56 Joan Moreau via dovecot <dovecot@dovecot.org> > wrote: > > > In such case, as long as the API is not upgraded, should > > doveadm index -A -q \* > > be considered a replacement of > > doveadm fts rescan > > On 2019-02-14 16:24, Timo Sirainen via dovecot wrote: > > > Hi, > > > > The rescan() function is a bit badly designed. Currently what you could do > > what fts-lucene does and: > > - Get list of UIDs for all mails in each folder > > - If Xapian has UID that doesn't exist -> delete it from Xapian > > - If UID is missing from Xapian -> expunge the rest of the UIDs in that > > folder, so the next indexing will cause them to be indexed > > > > The expunging of rest of the mails is rather ugly, yes.. A better API would > > be if backend simply had a way to iterate all mails in the index, > > preferrably sorted by folder. Then a more generic code could go through > > them and expunge the necessary mails and index the missing mails. Although > > not all FTS backends support indexing in the middle. Anyway, we don't > > really have time to implement this new API soon. > > > > I'm not sure if this is a big problem though. I don't think most people > > running FTS have ever run rescan. > > > > On 8 Feb 2019, at 9.54, Joan Moreau via dovecot <dovecot@dovecot.org> > > wrote: > > > > Hi, > > > > THis is a core problem in Dovecot in my understanding. > > > > In my opinion, the rescan in dovecot should send to the FTS plugin the list > > of "supposedly" indexed emails (UID), and the plugin shall purge the > > redundant UID (i..e UID present in the index but not in the list sent by > > dovecot) and send back the list of UID not in its indexes to dovecot, so > > Dovect can send one by one the missing emails > > > > WHat do you think ? > > > > -------- Original Message -------- > > > > SUBJECT: > > [grosjo/fts-xapian] `doveadm fts rescan` removes all indices (#15) > > > > DATE: > > 2019-02-08 08:28 > > > > FROM: > > Leonard Lausen <notificati...@github.com> > > > > TO: > > grosjo/fts-xapian <fts-xap...@noreply.github.com> > > > > CC: > > Subscribed <subscri...@noreply.github.com> > > > > REPLY-TO: > > grosjo/fts-xapian > > <reply+0022e607fd2eb3ff93959543198455bc7db5bdd58aa0286b92cf000000011874f1ae92a169ce18522...@reply.github.com> > > > > doveadm fts rescan -A deletes all indices, ie. all folders and files in the > > xapian-indexes are deleted. However, according to man doveadm fts, the > > rescan command should only > > > > Scan what mails exist in the full text search index and compare those to > > what > > actually exist in mailboxes. This removes mails from the index that have > > already > > been expunged and makes sure that the next doveadm index will index all the > > missing mails (if any). > > > > Deleting all indices does not seem to be the intended action, especially as > > constructing the index anew may take very long on large mailboxes. > > > > -- > > You are receiving this because you are subscribed to this thread. > > Reply to this email directly, view it on GitHub [1], or mute the thread [2]. > > > Links: > ------ > [1] https://github.com/grosjo/fts-xapian/issues/15 > [2] > https://github.com/notifications/unsubscribe-auth/ACLmB9OB-7GaKIvhNc8sCgi7KQTrjNnoks5vLScugaJpZM4auCWp
