231207 - When IMAP "Status" counts and DB counts disagree, sync.

Status: RESOLVED WORKSFORME

(MailNews Core :: Backend, enhancement)

Description

[Aleksey Nogin]

Summary: whenever it turns out that IMAP STATUS reports something inconsistent
with the local DB state, it would be nice if Mozilla knew to re-request all
headers and resync the local DB with the server status of the messages.

It seems that it is possible for the "unread" flags on messages to get
unsynchronized between the local .msf db and the IMAP server. Whenever this
happens, the "mail.imap.use_status_for_biff" mechanism will permanently keep
marking the folder as having new messages:
- Every time biff fires, the folder gets marked as having new messages and x
unread messages.
- When the folder is selected, the "new messages" mark disappears (there are
indeed no new messages) and the number of unread messages is updated to y (with
y < x).
- The above repeats indefinitely (with x and y being constant until something
indeed changes).

I have no idea what causes the DB to become unsynchronized, but I know it is
indeed unsynchronized - if I quit Mozilla, deleted the .msf and restart, then
the unread counts become the same, with both being equal to the "x" count above.

Would it be a good idea for Mozilla to be capable of detecting this condition
and synchronizing the local status with the remote one?

P.S. Not sure whether it matters, but all forlders in question are marked for
offline.

P.P.S. I see this on both 1.6 and a few days old trunk build.

Comment 1

[(not reading, please use [e-mail] instead)]

sorry for the spam.  making bugzilla reflect reality as I'm not working on these bugs.  filter on FOOBARCHEESE to remove these in bulk.

Comment 2

[Nikolay Shopik]

More like a bug for me, seen it too on TB3a1. There easy steps to reproduce it.
Make changes on your IMAP folder like change count of unread. Go to another computer with same account start TB see unread count doesn't updated. This is especially true for folders other than INBOX.

Comment 3

[Wayne Mery (:wsmwk)]

Nikolay, still see this with trunk?

Comment 4

[Nikolay Shopik]

Not anymore
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b5pre) Gecko/20090506 Shredder/3.0b3pre