ERROR: Too many values supplied for parameter "titles"

[kelson42]

[info] [2019-02-22T20:24:25.193Z] Getting JSON from [https://bm.wikipedia.org/w/api.php?action=query&prop=redirects&format=json&rdprop=title&rdlimit=max&rawcontinue=&titles=La_Serena|D%C3%A4ttlikon|Alger|Gautama_Buddha|Djamana_d%C3%A9kourou_sanfe_bada_bon_ka_fada_dogona_(UNHCR)|Lom%C3%A9|Bisau|Bourg-la-Reine|Antony|Asni%C3%A8res-sur-Seine|Bagneux_(Hauts-de-Seine)|Bois-Colombes|Boulogne-Billancourt|Ch%C3%A2tenay-Malabry|Ch%C3%A2tillon_(Hauts-de-Seine)|Chaville|Clamart|Clichy|Colombes|Courbevoie|Fontenay-aux-Roses|Garches|Gennevilliers|Issy-les-Moulineaux|La_Garenne-Colombes|Le_Plessis-Robinson|Levallois-Perret|Chaource|Antibes|Biot|Cannes|Grasse|Edirne|Arcachon|Bordeaux|Coutras|Atlanta|Boston|Chicago|Dallas|El_Paso_(Texas)|Fresno|Greensboro|Houston|Indianapolis|Jacksonville|Kansas_City_(Missouri)|Las_Vegas|Austin_(Texas)|Columbus_(Ohio)|Fort_Worth|Charlotte|D%C3%A9troit|Baltimore]
[info] [2019-02-22T20:24:25.194Z] Getting JSON from [https://bm.wikipedia.org/w/api.php?action=query&prop=redirects&format=json&rdprop=title&rdlimit=max&rawcontinue=&titles=Denver|Louisville_(Kentucky)|Albuquerque|Long_Beach|Colorado_Springs|Cleveland|Arlington_(Texas)|Bakersfield|Honolulu|Anaheim|Corpus_Christi|Lexington_(Kentucky)|Anchorage|Buffalo_(New_York)|Cincinnati|La_Baule-Escoublac|Gu%C3%A9rande|Corsept|La_Bernerie-en-Retz|Chauv%C3%A9|Les_Moutiers-en-Retz|Ch%C3%A9m%C3%A9r%C3%A9|Brains|Cheix-en-Retz|Bouaye|La_Montagne|La_Plaine-sur-Mer|Cou%C3%ABron|La_Chapelle-sur-Erdre|Abbaretz|Basse-Goulaine|Carquefou|La_Marne|Machecoul-Saint-M%C3%AAme|Bouguenais|Avessac|Conquereuil|Derval|Gu%C3%A9men%C3%A9-Penfao|Jans|La_Grigonnais|Jou%C3%A9-sur-Erdre|La_Meilleraye-de-Bretagne|Grand-Auvern%C3%A9|Iss%C3%A9|Les_Touches|Casson|Erbray|Louisfert|Ch%C3%A2teaubriant|Juign%C3%A9-des-Moutiers|Divatte-sur-Loire|Le_Cellier|Couff%C3%A9]
[info] [2019-02-22T20:24:25.194Z] Getting JSON from [https://bm.wikipedia.org/w/api.php?action=query&prop=redirects&format=json&rdprop=title&rdlimit=max&rawcontinue=&titles=Lign%C3%A9|Ancenis|Anetz|La_Roche-Blanche_(Loire-Atlantique)|Aigrefeuille-sur-Maine|Ch%C3%A2teau-Th%C3%A9baud|Le_Bignon|La_Chapelle-Glain|Blois|Bourges|Chartres|Ch%C3%A2teauroux|Gien|Liran]
[warn] [2019-02-22T20:24:25.486Z] Invalid JSON resonse: { error:
   { code: 'too-many-titles',
     info:
      'Too many values supplied for parameter "titles". The limit is 50.',
     '*':
      'See https://bm.wikipedia.org/w/api.php for API usage. Subscribe to the mediawiki-api-announce mailing list at <https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce> for notice of API deprecations and breaking changes.' },
  servedby: 'mw1314' }

[kelson42]

@ISNIT0 BTW, there is a typo in the error msg: Invalid JSON resonse

[ISNIT0]

This is not a bug, the wikis all have different settings - we automatically reduce the number over time. I did consider picking the limit out of the error code, but this seems fragile.

[kelson42]

@ISNIT0 If this is not an error, then the log should not report an error, the message should be clear that everything is normal.

[ISNIT0]

Yes, there was a typo with the code checking, I've opened a PR.

[kelson42]

@ISNIT0 Are you informed about any mediawiki instance with MAX<50? Otherwise I would just stick to that upper limit.

[ISNIT0]

@kelson42 The documentation says it's 500 (5000 for bots).
https://en.wikipedia.org/w/api.php?action=help&modules=query%2Bredirects

[kelson42]

@ISNIT0 If there is a discrepency between the doc and the reality, please open a bug immediatly on Phabricator and make a ref here.

[ISNIT0]

https://phabricator.wikimedia.org/T216850

[ISNIT0]

I had mis-understood the documentation. Have created a fix here :)