Hi, doc/readme.html in 2.3.14 still says:
Upgrade Caveats
This section reserved for WARNING WARNING WARNING comments.
Note that the replication protocol currently does not have the facility
to support the IMAP CONDSTORE extension (modification sequences). It is
recommended that you do not try to use both CONDSTORE and replication
at this time. The deficiencies in the replication protocol will be
fixed in version 2.3.9.
Is this problem fixed or is it still valid?
Quoting Ken Murchison <mu...@andrew.cmu.edu>:
There is a higher bookkeeping cost when only \Seen state changes because rather than just updating seen.db, we also have to tweak cyrus.index. The cost may not be enough to worry about, but since \Seen state is most likely the most frequently used flag (and most likely is changed separately from other flags), I didn't want to force CONDSTORE on people until we had a good handle on the performance hit.Bron Gondwana wrote:Hi Ken, everyone, Can anyone think of a good reason why CONDSTORE isn't enabled by default for everyone all the time? Back when it wasn't stable, fair enough - but I think it's pretty close now, and am willing to put a bit more effort in to finishing the job... Thunderbird 3 will support CONDSTORE to reduce the FLAGS traffic quite considerably, and hopefully other clients will follow suit if there is enough server support to be worth the effort. Looking at the code, the "bookkeeping" cost is quite low, and it always touches records that are being updated anyway, so the writes will be combined in the same block most of the time. Besides, it will simplify the code considerably to remove all the tests for "CONDSTORE ENABLED" everywhere. Bron ( looking at turning it on for all new mailboxes soon, and then enabling it for all the old ones )-- Kenneth Murchison Systems Programmer Carnegie Mellon University
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