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https://issues.apache.org/jira/browse/JAMES-2037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tellier Benoit updated JAMES-2037:
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    Component/s: IMAPServer

> Avoid reading messages when building UID <=> MSN mapping upon SELECT
> --------------------------------------------------------------------
>
>                 Key: JAMES-2037
>                 URL: https://issues.apache.org/jira/browse/JAMES-2037
>             Project: James Server
>          Issue Type: Improvement
>          Components: IMAPServer
>            Reporter: Tellier Benoit
>
> SelectedMailboxImpl builds the UID <=> MSN mapping for later uses. 
> Today, to do so, we read messages, and keep their UID.
> Needless to say, for some back-ends reading messages is an expensive 
> operation requiring "soft joins" (Cassandra). We should offer a way to 
> directly get an Iterator of UIDs in the mailbox.
> That would allow further optimizations, mostly on Cassandra implementations, 
> avoid thousands of queries upon IMAP SELECT commands on large mailboxes.



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