I've been using the wikidata stand-alone facility (https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual#Standalone_service) for several months now, relatively without incident.
Starting Tuesday Jul 13 '17 about 11am Pacific time, the update script began issuing a large number of stack traces like the one included below.
Did some configuration parameter change that this script is suddenly generating too many queries?
Thanks,
EXCERPT FROM STACK TRACE:
06:34:18.196 [main] INFO org.wikidata.query.rdf.tool.Update - Polled up to Tue Jun 13 21:28:07 PDT 2017 (next: 20170614042807|531838996) at (11.2, 3.2, 1.1) updates per second and (3579.0, 1024.6, 364.4) milliseconds per second
06:34:18.196 [main] INFO o.w.q.r.t.w.WikibaseRepository - useBackoff is false or rccontinue is not empty
06:34:18.196 [main] INFO o.w.q.r.t.w.WikibaseRepository - starting fetchRecentChanges with rccontinue 20170614042807|531838996
06:34:18.196 [main] INFO o.w.q.r.t.w.WikibaseRepository - Polling for changes from https://www.wikidata.org/w/api.php?format=json&action=query&list=recentchanges&rcdir=newer&rcprop=title%7Cids%7Ctimestamp&rcnamespace=0%7C120&rclimit=100&continue=&rccontinue=20170614042807%7C531838996&rcstart=20170614042807
06:34:18.464 [main] INFO o.w.q.r.t.change.RecentChangesPoller - Got 100 changes, from Q21473187@500681175@20170614042807|531838996 to Q21476526@500681275@20170614042834|531839096
06:34:18.465 [main] INFO o.w.q.r.t.change.RecentChangesPoller - nextContinue creating new Batch: {"rccontinue":"20170614042834|531839097","continue":"-||"}
06:34:19.114 [update 4] WARN org.wikidata.query.rdf.tool.Update - Contained error syncing. Giving up on Q13873716
org.wikidata.query.rdf.tool.exception.ContainedException: Unexpected status code fetching RDF for https://www.wikidata.org/wiki/Special:EntityData/Q17577314.ttl?nocache=1497533660340&flavor=dump: 429
at org.wikidata.query.rdf.tool.wikibase.WikibaseRepository.fetchRdfForEntity(WikibaseRepository.java:267) ~[wikidata-query-tools-0.2.3-SNAPSHOT-jar-with-dependencies.jar:na]
at org.wikidata.query.rdf.tool.Update.handleChange(Update.java:474) ~[wikidata-query-tools-0.2.3-SNAPSHOT-jar-with-dependencies.jar:na]
at org.wikidata.query.rdf.tool.Update.access$0(Update.java:472) ~[wikidata-query-tools-0.2.3-SNAPSHOT-jar-with-dependencies.jar:na]
at org.wikidata.query.rdf.tool.Update$1.run(Update.java:370) ~[wikidata-query-tools-0.2.3-SNAPSHOT-jar-with-dependencies.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_131]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_131]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]