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arthurpsmith / author-disambiguator

Wikidata service to help create or link author items to published articles
GNU General Public License v3.0
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Warning: assert(): SPARQL query failed #109

Closed Daniel-Mietchen closed 4 years ago

Daniel-Mietchen commented 4 years ago

I was just getting

Warning: assert(): SPARQL query failed: SELECT ?q (count(?article) as ?count) WHERE { SELECT ?q ?article WHERE { VALUES ?q { } . ?article wdt:P50 ?q . } } group by ?q #TOOL: legacy code failed in /data/project/author-disambiguator/public_html/magnustools/ToolforgeCommon.php on line 427

for https://tools.wmflabs.org/author-disambiguator/?doit=Look+for+author&name=ASDEX%20Upgrade%20Team , which otherwise worked as expected (see output in https://tools.wmflabs.org/quickstatements/#/batch/24402 and https://tools.wmflabs.org/scholia/organization/Q79426724 ).

This seems to be the same error that was behind #42 , but the underlying SPARQL query was different back then.

Daniel-Mietchen commented 4 years ago

Getting the same error for https://tools.wmflabs.org/author-disambiguator/?doit=Look+for+author&name=Qingwei%20Yang .

Daniel-Mietchen commented 4 years ago

Getting it for lots of other search strings as well, but not for all, e.g. not for https://tools.wmflabs.org/author-disambiguator/?doit=Look+for+author&name=Viness%20Pillay .

Daniel-Mietchen commented 4 years ago

Here is a screenshot for yet another case, https://tools.wmflabs.org/author-disambiguator/?fuzzy=0&wbsearch=0&limit=500&name=Elizabeth+Tildesley .

Screenshot_2019-12-22 Author Disambiguator(2)

Daniel-Mietchen commented 4 years ago

Actually, the QuickStatements batch mentioned in the first comment on this thread did not behave normally - it did not finish, even upon multiple "Fix errors" retries, and it made repeated edits to the same item, e.g. as per https://www.wikidata.org/w/index.php?title=Q48194357&action=history .

arthurpsmith commented 4 years ago

This will happen if the query server is not behaving properly in some way. I don't think there's really anything on the author disambiguator side to do about it; the error display is even coming from a library I copied from Magnus Manske, so not really my code at all. I assume his tools would have exactly the same problem (as suggested by QuickStatements having problems here also). Anyway, these will crop up if WDQS is down in some way, but otherwise don't seem to be a problem... closing.