Don't build suggesters if disabled

Now that I've worked out the problem comes during cron execution I can start debugging it.

You need to check the Solr logs.

You can also increase the timeout on the server edit page in Drupal.

I'm also experiencing this problem since updating from V4.2 to V4.3 together with updating from Drupal 9 to 10. It only appears on cron, regular indexing works like it's supposed to work.

FWIW I'm seeing this on a Pantheon site, so I don't have access to the Solr logs.

These are the logs generated in SOLR at the same time as the error occurs:

2023-10-30 13:30:03.086 INFO (qtp1548081008-23) [ x:shared] o.a.s.c.S.Request [shared] webapp=/solr path=/select params={q=*:*&json.facet={"maxVersion":"max(_version_)"}&json.nl=flat&omitHeader=false&fl=*,score&start=0&rows=1&wt=json} hits=6220 status=0 QTime=1
2023-10-30 13:30:11.020 INFO (qtp1548081008-20) [ x:shared] o.a.s.c.S.Request [shared] webapp=/solr path=/select params={q=*:*&json.facet={"maxVersion":"max(_version_)"}&json.nl=flat&omitHeader=false&fl=*,score&start=0&rows=1&wt=json} hits=6220 status=0 QTime=0
2023-10-30 13:30:25.445 INFO (qtp1548081008-22) [ x:shared] o.a.s.c.S.Request [shared] webapp=/solr path=/select params={q=*:*&json.facet={"maxVersion":"max(_version_)"}&json.nl=flat&omitHeader=false&fl=*,score&start=0&rows=1&wt=json} hits=6220 status=0 QTime=0
2023-10-30 13:30:25.519 INFO (qtp1548081008-22) [ x:drupal] o.a.s.c.S.Request [drupal] webapp=/solr path=/select params={q=*:*&json.facet={"maxVersion":"max(_version_)"}&json.nl=flat&omitHeader=false&fl=*,score&start=0&rows=1&wt=json} hits=36731 status=0 QTime=2
2023-10-30 13:30:25.606 INFO (qtp1548081008-22) [ x:drupal] o.a.s.h.c.SuggestComponent SuggestComponent prepare with : json.nl=flat&omitHeader=true&suggest.build=false&suggest.count=10&suggest.reload=false&suggest=true&suggest.buildAll=true&suggest.dictionary=und&wt=json&rid=-1664
2023-10-30 13:30:25.606 INFO (qtp1548081008-22) [ x:drupal] o.a.s.s.s.SolrSuggester SolrSuggester.build(und)
2023-10-30 13:30:30.712 INFO (qtp1548081008-22) [ x:drupal] o.a.s.s.s.SolrSuggester SolrSuggester.build(nl)
2023-10-30 13:30:35.476 INFO (qtp1548081008-22) [ x:drupal] o.a.s.h.c.SuggestComponent SuggestComponent process with : json.nl=flat&omitHeader=true&suggest.build=false&suggest.count=10&suggest.reload=false&suggest=true&suggest.buildAll=true&suggest.dictionary=und&wt=json&rid=-1664
2023-10-30 13:30:35.476 INFO (qtp1548081008-22) [ x:drupal] o.a.s.c.S.Request [drupal] webapp=/solr path=/suggest params={json.nl=flat&omitHeader=true&suggest.build=false&suggest.reload=false&suggest=true&suggest.buildAll=true&wt=json} status=0 QTime=9870

Increasing the query and index timeouts from 5 to 10 seconds seems to "resolve" this

I can confirm that increasing the query timeout resolves the error.

Additionally, I think this cron-logic needs to be expanded to first see if the suggest request handler is enabled. You can disable it through the UI, but doing so will result in 404 Solr endpoint errors in the logs (when this cron is run).

A provider like pantheon could block or disable the suggester request handler.
In this case you should also disable it via Search API Solr's UI.
This patch then "solves" the issue.

Thanks for working out a fix for that!

Automatically closed - issue fixed for 2 weeks with no activity.