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List:       dovecot
Subject:    Re: imapc making too any connections
From:       Timo Sirainen <tss () iki ! fi>
Date:       2017-06-30 13:53:36
Message-ID: 3F5A2960-0CD9-41DD-AA8D-6BD5088BEB42 () iki ! fi
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On 29 Jun 2017, at 18.44, van der Kamp, John <jkamp@amazon.nl> wrote:
> 
> Hi,
> 
> I was testing around with 2.2.31, and saw that it made new extra connections to the \
> backend imap server whenever you make a new mailbox. So client does:
> 
> A001 login username password
> A002 create subfolder
> 
> Previously, dovecot would just send the create command to the backend, but now does \
> (including connection IDs): 
> [conn1] 9 CREATE "subfolder"
> [conn1] 10 EXAMINE "INBOX"
> [conn2] 12 LOGIN "username" "password"
> [conn2] 11 SELECT "subfolder"
> 
> The new EXAMINE Command is a bit weird, but the secondary connection is a complete \
> waste. I also haven't seen any other action on it yet, but it's kept around. If you \
> make more mailboxes, every time you gain an extra connection from dovecot to the \
> backend imap server. And they all stick around. I don't know which changes this \
> behavior triggered, there were loads of imapc fixes the last couple of releases.

It's caused by https://github.com/dovecot/core/commit/444e2d726b0c351e28888b10a9593426ad5c4d53 \
<https://github.com/dovecot/core/commit/444e2d726b0c351e28888b10a9593426ad5c4d53> - \
completely different from what I guessed..


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