Fwd: [grosjo/fts-xapian] `doveadm fts rescan` removes all indices (#15)
jom at grosjo.net
Fri Feb 8 09:54:22 EET 2019
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 --------
[grosjo/fts-xapian] `doveadm fts rescan` removes all indices (#15)
Leonard Lausen <notifications at github.com>
grosjo/fts-xapian <fts-xapian at noreply.github.com>
Subscribed <subscribed at noreply.github.com>
<reply+0022e607fd2eb3ff93959543198455bc7db5bdd58aa0286b92cf000000011874f1ae92a169ce185221c2 at 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.
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