Benoit Tellier created JAMES-3408:
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Summary: 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
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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