Notes - Nov 26 2018

[Anatoli]

Got it, thanks for the explanation!

*From:* Robert Stepanek
*Sent:* Tuesday, November 27, 2018 10:05
*To:* Cyrus Devel
*Subject:* Re: Notes - Nov 26 2018

Hi Anatoli,

no, what I am working is rather the opposite: the current implementation 
uses exclusive locks on mailboxes where it could do away with a shared 
read-only lock. That's because the  Cyrus DB API currently does not 
support shared locks.

We want to reduce latency of  requests, and that's what I am optimizing 
for. The work only touches the twoskip backend and is only for certain 
hot-paths in the code.

Cheers,
Robert


On Tue, Nov 27, 2018, at 1:50 PM, Anatoli wrote:
> Hi All!
>
> Robert, is your work on read-only cyrusdb locks somehow related to the 
> global lock feature 
> (https://github.com/cyrusimap/cyrus-imapd/issues/1763)?
>
> Regards,
> Anatoli
>
> *From:* Robert Stepanek
> *Sent:* Monday, November 26, 2018 18:40
> *To:* Cyrus Devel
> *Subject:* Notes - Nov 26 2018
>
> Participants: Bron, Ellie, Ken, Partha, Robert
>
> Ken:
> - Short week for US.
> - Mainly working on mailbox by id. Some Cassandane tests fail, more a 
> matter of fixing them instead Cyrus code.
> - Annotations.db needs to use ids instead of mailbox names. Same for 
> conversations.db.
> - RENAME should become fairly trivial, with reduced IO overhead.
> - Before continuing with mailbox by id : need to update RFC drafts.
> - Issue with building a SASL distribution on Fedora (due to Sphinx)
>
> Bron:
> - New Cyrus rolled out yesterday, along with changes to frontend and 
> middleware.
> - Fixed JMAP bugs that crept in with commits last week.
>
> Ellie:
> - IMAP labels patch updated after review, ready to merge.
> - SASL: distcheck is flaky on Windows. Haven't looked into it, yet.
>
> Robert:
> - Short week as well, was ill.
> - Fixed JMAP bugs and updated JSCalendar v8 implementation.
> - JSCalendar RFC is in last call at IETF!
> - JMAP Quota patch updated. JMAP part is trivial, but quotamodseq 
> touches lots of critical areas: sync, mboxevent, counters. Bron 
> volunteered to review.
> - Now working on read-only cyrusdb locks: only for cyrusdb_open and 
> twoskip.
>
> Partha:
> - Zeroskip is part of cyruslibs. Unit tests checked on cyrus.works.
> - How to inspect zeroskip binary format for debugging? Either use 
> zeroskip-inluded tooling to dump db, or use cvt_cyrusdb binary.


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