Index Maintenance

Solr offers a lot of request handlers to do maintenance tasks.

Committing pending documents

curl http://host:port/solr-path/update -H "Content-Type: text/xml"
    --data-binary '<commit />'

Clearing the index

curl http://host:port/solr-path/update -H "Content-Type: text/xml"
    --data-binary '<delete><query>*:*</query></delete>'

curl http://host:port/solr-path/update -H "Content-Type: text/xml"
    --data-binary '<commit />'

Optimizing the index

This is no longer needed. The old scheduler task have also been removed.

Searching the index from the command line


q:what to search for. Format: fieldName:fieldValue
qt:defines the query type, for the command line we recommend “standard”, the extension itself uses “dismax”
fl:comma separated list of fields to return
rows:number of rows to return
start:offset from where to return results
curl 'http://host:port/path-to-solr/select?q=hello&qt=standard&fl=title,content'

Getting information / statistics about the index

curl 'http://host:port/path-to-solr/admin/luke'

Create cores with the core admin api

The CoreAdmin API ( allows you, manipulate the cores in your solr server.

Since we support configSets a core could be generated with the following http call:

curl 'http://host:port/path-to-solr/admin/cores?action=CREATE&name=core_de&configSet=ext_solr_8_0_0&schema=german/schema.xml&dataDir=../../data/german'