So I woke up this morning to find my shiny new Solr install had corrupted a core 😐 and I was unable to create a one in the UI
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05/11/2015, 12:33:45
WARN
Config
XML parse warning in "solrres:/solrconfig.xml", line 1616, column 86: Include operation failed, reverting to fallback. Resource error reading file as XML (href='solrconfig_extra.xml'). Reason: Can't find resource 'solrconfig_extra.xml' in classpath or '/opt/solr/solr-4.10.2/example/solr/collection1/conf'
05/11/2015, 12:33:46
WARN
SolrResourceLoader
Solr loaded a deprecated plugin/analysis class [solr.FloatField]. Please consult documentation how to replace it accordingly.
05/11/2015, 12:33:46
WARN
SolrResourceLoader
Solr loaded a deprecated plugin/analysis class [solr.DateField]. Please consult documentation how to replace it accordingly.
05/11/2015, 12:33:47
WARN
RequestHandlers
Multiple requestHandler registered to the same name: /update ignoring: org.apache.solr.handler.UpdateRequestHandler
05/11/2015, 12:33:47
WARN
RequestHandlers
Multiple requestHandler registered to the same name: /update/csv ignoring: org.apache.solr.handler.UpdateRequestHandler
05/11/2015, 12:33:47
WARN
RequestHandlers
Multiple requestHandler registered to the same name: /update/json ignoring: org.apache.solr.handler.UpdateRequestHandler
05/11/2015, 12:33:47
ERROR
CoreContainer
Error creating core [candi_policy]: Error opening new searcher
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The way I solved it was to go into the cores folder (for me, /opt/solr/solr-4.10.2/example/solr), and move the core folder out of there. Then create a new folder with the name of your core, a data folder within that, and then also in there cp -R the conf folder from the corrupted core folder you moved out of there.
Then all you need to do is restart Solr, and you can now create a fresh core in the UI. Once you have that, reindex your documents, and you’re all set to go again!
Update: It happened again this morning. I think it’s because I exit my VM and vagrant halt, which usually shuts everything down gracefully. So make sure you run /opt/solr/solr-4.10.2/bin/solr stop (or equivalent) before shutting down your machine.
DelBoys Place 