Lucas_Werkmeister_WMDE added a comment.
`0` is the argument to `lockClient()`, which is called in `selectClient()`
wth keys of `$candidates`:
$candidates = $this->getCandidateClients();
while ( $candidates ) {
// pick one
$k = call_user_func( $this->array_rand, $candidates );
$wiki = $candidates[ $k ];
unset( $candidates[$k] );
// lock it
$state = $this->lockClient( $wiki );
In `getCandidateClients()`, the return value ultimately comes from
`IDatabase::selectFieldValues()`, implying that we have some
`wb_changes_dispatch` rows where the `chd_site` is actually `0`. I’m not sure
if that’s correct.
I haven’t found any recent changes in Wikibase that sound relevant. However,
the MediaWiki core change “Have `Database::addQuotes()` pass through bare
integers without quoting” <https://gerrit.wikimedia.org/r/551024> was merged
very recently, and sounds like it //might// cause this issue, though I don’t
yet see exactly how this would happen.
TASK DETAIL
https://phabricator.wikimedia.org/T238575
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To: Lucas_Werkmeister_WMDE
Cc: Addshore, Aklapper, Lucas_Werkmeister_WMDE, Iflorez, darthmon_wmde,
alaa_wmde, DannyS712, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden,
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