[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Mormegil]

Mormegil closed this task as "Resolved".
Mormegil added a comment.


  The links were correctly updated and seem to be correct now, thanks!

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To: Mormegil
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karapayneWMDE, Invadibot, maantietaja, ItamarWMDE, Akuckartz, Nandana, Lahi, 
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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Manuel]

Manuel added a comment.


  Thank you for your thorough investigation, @Michael!

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Michael]

Michael added a project: Wikibase change dispatching scripts to jobs.
Michael added a comment.


  So after looking into it some more and some pointers from a colleague:
  
  Originally, this seems to indeed having been caused by sometimes not 
scheduling the correct job if a new sitelink was added. That was fixed 
, and 
that fix is deployed since about January 20th. So for sitelinks being added 
after that, this should not be happening anymore.
  
  To fix pages from before that, a purge is indeed not enough. It needs a purge 
//with forced links update//. This can be done via the api 
.
 A null-edit probably also works.
  
  While this should work automatically for future sitelinks being added to 
Wikidata, the job which triggers that refresh of links has currently a backlog 
of over **3 days 
**.

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Michael]

Michael added a comment.


  Ah, then I misunderstood the issue and confused it with a similar sounding 
one. I'm sorry, I will take another look at what is going on here.

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Mormegil]

Mormegil added a comment.


  In T299828#7653095 , 
@Michael wrote:
  
  >> Purging some of the pages?
  >
  > Purging the pages in mkwiki should always fix these things.
  
  “These”? Meaning “interwiki links are correctly displayed in the sidebar, but 
are not present in the sitelinks table and the API does not return them”? OK, 
so I went ahead and purged the mkwiki category page. It dit not fix the problem.
  
  In T299828#7653178 , 
@Michael wrote:
  
  > Though it might take a while for them to actually appear on the mkwiki page.
  
  Well, as the links have been visible on the mkwiki page from the very 
beginning, it’s probably not very surprising the interwiki links do still 
appear on the category page, but the API request still does not return them.

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Michael]

Michael added a comment.


  Based on our tracking: Langlinks should appear properly for sitelinks added 
after Thursday last week: 
https://grafana.wikimedia.org/d/hGFN2TH7z/edit-dispatching-via-jobs?viewPanel=24=1=164246400=now
  
  Though it might take a while for them to actually appear on the mkwiki page. 
If I remember correctly, then the job that purges the page isn't high priority 
(as opposed to the job that injects the change into the recent changes and 
watchlists)

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Michael]

Michael added a comment.


  > Purging some of the pages?
  
  Purging the pages in mkwiki should always fix these things.
  
  There was a problem with sitelinks having been newly added to Wikidata, but 
this should have been fixed since about a week ago.
  
  Is it known whether new instances of this issue occurred _this week_? Or is 
it just holdovers from before? In the latter case, purging those pages on 
mkwiki should be good enough to fix it.

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Manuel]

Manuel added a subscriber: Michael.
Manuel added a comment.


  At the first glance, I did not think so, but reading the comments in T297238 
 it actually might be. @Michael 
could you please help us clarify?

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Lydia_Pintscher]

Lydia_Pintscher added subscribers: Manuel, Lydia_Pintscher.
Lydia_Pintscher added a comment.


  @Manuel Do you know if this is the same issue as T233520 
 which is being worked on atm?

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[Wikidata-bugs] [Maniphest] T299828: mkwiki pages missing langlinks entries even though linked with a Wikidata item

[Mormegil]

Mormegil created this task.
Mormegil added projects: Wikidata, Wikimedia-Interwiki-links.
Restricted Application added a subscriber: Aklapper.

TASK DESCRIPTION
  TL;DR:
  
  1. See mk:Категорија:Леднички земјишни облици 

 and the correctly displayed language links there (and the corresponding 
Wikidata item ).
  2. Compare with an API example 
 reporting the page has //no// language links. (And the same 
shows in the langlinks database replica on Toolforge.)
  
  
  
  I have received an error report 

 about my Toolforge tool not working 
 for some recently created categories on mkwiki.
  
  The problem seems to be that some pages on mkwiki are missing entries in the 
langlinks table, even though the page is linked with a Wikidata item with many 
sitelinks, and the Wikipedia category page even displays those links correctly 
.
  
  However, there are no langlink rows for the page in the Toolforge database 
replica, and the mkwiki API returns no langlinks for the page as well: See an 
API example 

 contrasting the missing langlinks with another recently created category, 
which lists them correctly.
  
  I guess this probably comes from some issue when syncing/updating changes in 
Wikidata to the local wiki database. It might be the same or similar issue as 
reported in T297238 ? (In that case, 
feel free to mark this a duplicate.) However, even though I understand 
distributed systems will necessarily experience similar issues, I am not sure 
if there is any remedy available: Would any edit to the respective Wikidata 
item help force the refresh? Or removing and re-adding the corresponding mkwiki 
sitelink from Wikidata? Purging some of the pages? Something else?

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