[Akonadi] [Bug 333035] New: Supposable timing problem causes duplicate mails after filtering

[Tobias Leupold]

https://bugs.kde.org/show_bug.cgi?id=333035

            Bug ID: 333035
           Summary: Supposable timing problem causes duplicate mails after
                    filtering
    Classification: Unclassified
           Product: Akonadi
           Version: 1.11.0
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Mail Filter Agent
          Assignee: kdepim-bugs at kde.org
          Reporter: tobias.leupold at web.de

I get a lot of emails from my homepage, each time some spam bot posts a spam
guestbook or weblog comment. Sometimes, I get 10 or 20 per hour.

I filter those mails (using kmail) and put them in a separate directory. Most
of the time, two copies end up there, sometimes also present as two separate
files in the maildir. Sometimes I get two copies, but one of them with empty
text. Sometimes, I even get new unread mails in my normal inbox which don't
show up, and after reading both copies of the filtered mail, the unread mark
disappears. Well, sometimes, the filtering even simply works and I only get one
mail in the destination folder ;-)

Anyways, this is very annoying, causing hundreds of duplicate mails here – but
the behaviour is inconsistent. Most of the time, I simply get two copies of the
moved mails.

What I tried is this: I simply added a "Run command: sleep 0.5" after the "Move
into folder …" action. With this added, no more duplicate mails show up when
this filter is used.

So I think this is some timing problem that occurs when many mails are handled
by the same filter. I hope this helps debugging this … I would really love to
see this fixed.

Reproducible: Sometimes

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