These are already logged, see https://github.com/wikimedia/mediawiki-extensions-GrowthExperiments/blob/39db29fb41f017c8404aa6f81e923e8c955354e8/includes/NewcomerTasks/TaskSuggester/SearchTaskSuggester.php#L163-L176

In T279771#6987278, @Tgr wrote:

These are already logged, see https://github.com/wikimedia/mediawiki-extensions-GrowthExperiments/blob/39db29fb41f017c8404aa6f81e923e8c955354e8/includes/NewcomerTasks/TaskSuggester/SearchTaskSuggester.php#L163-L176

I think this logging is broken:

[urbanecm@mwlog1001 /srv/mw-log/archive]$ grep -i 'Search error' GrowthExperiments.log-20210409
[urbanecm@mwlog1001 /srv/mw-log/archive]$ zgrep -i 'Search error' GrowthExperiments.log-20210*.gz
[urbanecm@mwlog1001 /srv/mw-log/archive]$ cd ..
[urbanecm@mwlog1001 /srv/mw-log]$ grep -i 'Searh error' GrowthExperiments.log
[urbanecm@mwlog1001 /srv/mw-log]$

There don't appear to be any matches for "search error" Thanks to T279646, there are supposed to be some matching entries for dawiki at least.

Logging probably doesn't work in maintenance scripts that exit with fatalError() (which is basically just die()).

In T279771#6987968, @Tgr wrote:

Logging probably doesn't work in maintenance scripts that exit with fatalError() (which is basically just die()).

Isn't this supposed to be an error that happens when you load your homepage when the config file has too many templates? I just tried it on testwiki, and https://test.wikipedia.org/w/api.php?action=query&format=json&prop=info%7Crevisions%7Cpageimages&inprop=protection&rvprop=ids&piprop=name%7Coriginal%7Cthumbnail&pithumbsize=332&generator=growthtasks&ggtlimit=250&ggttasktypes=expand&formatversion=2&uselang=en returned:

{"error":{"code":"cirrussearch-query-too-long","info":"Search request is longer than the maximum allowed length. (Actual: 439; allowed: 300)","docref":"See https://test.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":"mw1412"}

IMO that should get logged, so we can see if similar error happens elsewhere (basically disabling our features).

Change 678294 had a related patch set uploaded (by Gergő Tisza; author: Gergő Tisza):

[mediawiki/extensions/GrowthExperiments@master] Fix logging of decorated task suggester

https://gerrit.wikimedia.org/r/678294

Oops, looks like we broke logging at some point.

Change 678294 merged by jenkins-bot:

[mediawiki/extensions/GrowthExperiments@master] Fix logging of decorated task suggester

https://gerrit.wikimedia.org/r/678294