From time to time I have to do some Solr configuration for a client and tend to experience a couple of obscure errors that I stumble into, fix, and then proceed to forget about until the next time. Well it’s time to write these tidbits down for future reference….
Often you will complete your new Solr core setup and want to do an initial build on the index via the Index Manager in the Sitecore Control Panel.
Occasionally on triggering a rebuild, the Indexing Manager will proudly report that “The search indexes have been rebuilt.” despite the result below saying something like:
Job started: Index_Update_IndexName=yourindexnamehere
Job ended: Index_Update_IndexName=yourindexnamehere (units processed: )
Finished in 0 seconds
Checking the Crawling.log can reveal a message such as:
1075928 11:07:09 WARN Failed to initialize 'yourindexnamehere' index. Registering the index for re-initialization once connection to SOLR becomes available ...1075928
11:07:09 WARN DONE
Simply recycling the app pool was enough to solve the issue: