: Please see the documentation: http://wiki.apache.org/solr/SolrCloud#Required_Config : : schema.xml : : You must have a _version_ field defined: : : <field name="_version_" type="long" indexed="true" stored="true"/>
Seems like this is the kind of thing that should make Solr fail hard and fast on SolrCore init if it sees you are running in cloud mode and yet it doesn't find this -- similar to how some other features fail hard and fast if you don't have uniqueKey. -Hoss
