Solr Cookbook - Third Edition

Using core discovery

Until Solr 4.4, solr.xml needed to include mandatory information, such as the cores definition. This was needed because Solr used this information to get and load the defined cores and their properties, basically information that was required for Solr to operate properly. Starting from Solr 4.4, a new structure of the solr.xml file was introduced, and in addition to this, a process called core discovery was implemented. Due to these changes, we are not forced to describe the core in the solr.xml file, but instead, we can use simple text files, and Solr will automatically load the appropriate cores. This recipe will show you how to use the core discovery process.

How to do it...

Using the new core discovery process is very simple. ...