Congratulations, awesome work!
On Thu, Sep 13, 2018 at 7:49 AM Bryan Davis <bd808(a)wikimedia.org> wrote:
On Wed, Sep 12, 2018 at 11:16 AM, Alexandros Kosiaris
<akosiaris(a)wikimedia.org> wrote:
Hello all,
Today we've successfully migrated our wikis (MediaWiki and associated
services)
from our primary data center (eqiad) to our secondary (codfw), an
exercise
we've done for the 3rd year in a row. During
the most critical part of
the
switch today, the wikis were in read-only mode
for a duration of 7 and a
half minutes - a significant improvement from last year.
Everyone involved worked hard to make this happen, but I'd like to
give a special shout out to Giuseppe Lavagetto for taking the time to
follow up on a VisualEditor problem that affected Wikitech
(<https://phabricator.wikimedia.org/T163438>). We noticed during the
April 2017 switchover that the client side code for VE was failing to
communicate with the backend component while the wikis were being
served from the Dallas datacenter. We guessed that this was a
configuration error of some sort, but did not take the time to debug
in depth. When the issue reoccurred during the current datacenter
switch, Giuseppe took a deep dive into the code and configuration,
identified the configuration difference that triggered the problem,
and made a patch for the Parsoid backend that fixes Wikitech.
Wikitech is a low volume wiki for both edits and reads, and for
various historical and technical reasons is different from all other
wikis that we host. Keeping it available for reading is important to
our technical teams because it hosts many of the troubleshooting
playbooks that we use to diagnose and correct operational problems on
the rest of the wikis. Taking the time to work on an editing bug that
only impacted edits done using VisualEditor is awesome, but not the
sort of thing I would normally expect to be worked on promptly. For
me, Giuseppe's work on this bug is a sign that that he cares about the
small details, and also that the rest of the switchover went well
giving him the time to investigate lower impact edge cases like this.
Bryan
--
Bryan Davis Wikimedia Foundation <bd808(a)wikimedia.org>
[[m:User:BDavis_(WMF)]] Manager, Technical Engagement Boise, ID USA
irc: bd808 v:415.839.6885 x6855
_______________________________________________
Wmfall mailing list
Wmfall(a)lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/wmfall