Smalyshev added subscribers: Gehel, BBlack. Smalyshev added a comment.
Looks like it's something in varnish. When I send the request locally on wdqs1001 or wdqs1002: `curl -D - 'http://localhost/bigdata/namespace/wdq/sparql?query=SELECT%20%3Fitem%20WHERE%20%7B%0A%20%20%3Fitem%20wdt%3AP22%20%3Fsub0%20.%0A%20%20%3Ftree0%20(wdt%3AP40)*%20%3Fsub0%20.%0A%20%20BIND%20(wd%3AQ7210%20AS%20%3Ftree0)%0A%7D&format=json'` I get the response just fine, and it takes 11 seconds (full response size is 1.6M). However, when I send it via the load balancer endpoint: `curl -D - 'https://query.wikidata.org/bigdata/namespace/wdq/sparql?query=SELECT%20%3Fitem%20WHERE%20%7B%0A%20%20%3Fitem%20wdt%3AP22%20%3Fsub0%20.%0A%20%20%3Ftree0%20(wdt%3AP40)*%20%3Fsub0%20.%0A%20%20BIND%20(wd%3AQ7210%20AS%20%3Ftree0)%0A%7D&format=json'` it returns in 3 seconds and the response is empty. The header is: HTTP/1.1 200 OK Server: nginx/1.9.4 Date: Sat, 19 Mar 2016 04:14:11 GMT Content-Type: application/sparql-results+json Transfer-Encoding: chunked Connection: keep-alive X-Served-By: wdqs1001 Access-Control-Allow-Origin: * X-Varnish: 744746864, 1317278448 Via: 1.1 varnish, 1.1 varnish Age: 0 X-Cache: cp1058 miss(0), cp1051 frontend miss(0) Set-Cookie: WMF-Last-Access=19-Mar-2016;Path=/;HttpOnly;Expires=Wed, 20 Apr 2016 00:00:00 GMT X-Analytics: https=1;nocookies=1 X-Client-IP: 2620:0:861:107:92b1:1cff:fe1d:e7e5 I think something is confusing one of the varnishes. @BBlack, @Gehel - maybe you could take a look at this? TASK DETAIL https://phabricator.wikimedia.org/T127014 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Smalyshev Cc: BBlack, Gehel, Nikki, Mbch331, Magnus, JanZerebecki, Smalyshev, Aklapper, StudiesWorld, Bugreporter, debt, D3r1ck01, FloNight, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles _______________________________________________ Wikidata-bugs mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs
