See https://phabricator.wikimedia.org/T242453 linked on the report page
That doesn't take directly to a SPARQL query. I just want the
SPARQL query.
Kingsley
On Sun, Jul 26, 2020 at 6:55 PM Kingsley Idehen <kidehen@openlinksw.com> wrote:
On 7/24/20 3:18 PM, Ryan Kemper wrote:
> Hi all,
>
> We experienced WDQS service disruptions on 2020/07/23. As a result
> there was a full outage (inability to respond to all queries) for a
> period of several minutes, and a more extended period of
> intermittently degraded service (inability to respond to a subset of
> queries) for 1-2 hours.
>
> The full incident report is available here:
> https://wikitech.wikimedia.org/wiki/Incident_documentation/20200723-wdqs-outage
>
> Ultimately, we traced the proximate cause to a series of
> non-performant queries, which caused a deadlock in blazegraph, the
> backend for WDQS. We have placed a temporary block on the IP address
> in question and are taking steps to better define service availability
> expectations as well as processes to make detection of these events
> more streamlined going forward.
What was the problem query?
I ask because I would like to try it against our Wikidata endpoint at:
https://wikidata.demo.openlinksw.com/sparql .
We have an "Anytime Query" feature designed for these kinds of problems,
hence the vested interest in these kinds of problem queries.
--
Regards,
Kingsley Idehen
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Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software
Home Page: http://www.openlinksw.com
Community Support: https://community.openlinksw.com
Weblogs (Blogs):
Company Blog: https://medium.com/openlink-software-blog
Virtuoso Blog: https://medium.com/virtuoso-blog
Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers
Personal Weblogs (Blogs):
Medium Blog: https://medium.com/@kidehen
Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
http://kidehen.blogspot.com
Profile Pages:
Pinterest: https://www.pinterest.com/kidehen/
Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
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