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From René Cordier (Jira) <server-...@james.apache.org>
Subject [jira] [Commented] (JAMES-3408) IMAP LIST should not query "mailbox counters"
Date Mon, 12 Oct 2020 07:48:00 GMT

    [ https://issues.apache.org/jira/browse/JAMES-3408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17212203#comment-17212203
] 

René Cordier commented on JAMES-3408:
-------------------------------------

Been merged

> IMAP LIST should not query "mailbox counters"
> ---------------------------------------------
>
>                 Key: JAMES-3408
>                 URL: https://issues.apache.org/jira/browse/JAMES-3408
>             Project: James Server
>          Issue Type: Improvement
>          Components: IMAPServer, mailbox
>            Reporter: Benoit Tellier
>            Priority: Major
>         Attachments: 94106692-2212d400-fe66-11ea-96bd-2c43d7fefc8a.png
>
>
> This information is unused.
> Remove "mailbox counters" from `MailboxManager::search` MailboxMetdata POJO.
> JMAP-draft and JMAP-RFC8621 will need to rely on a brand new `mailboxManager.getMailboxCounters(ids)`
calls as part of `Mailbox/get`.
> This is even more important to avoid paying the price of mailbox-counters read repairs
upon IMAP LIST.
> = Definition of done
> Using glowroot on DEV (or locally on a distributed-james server), access your mailbox
via IMAP and Thunderbird.
> Go in the IMAP LIST transaction, there should be no "mailbox counters" calls.
> = Diagnostic
> While looking at the Glowroot board:
> {code:java}
> Transaction type: IMAP
> Transaction name: IMAP processor : org.apache.james.imap.processor.ListProcessor
> Start: 2020-06-29 5:04:15.319 am (+07:00)
> Duration: 29,310.3 milliseconds
> {code}
> We saw that we have some IMAP list slow traces, mostly due to the (very) high count of
mailboxes... (104)
> A closer look at executed queries shows around a third of the query time is spent retrieving
mailbox counters. Which is not part of the IMAP list response.



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