Managing caching
Modifying the solrconfig.xml file to use the StandardDirectoryFactory.
The DSENRTCachingDirectoryFactory is deprecated. If you use
DSENRTCachingDirectoryFactory or the NRTCachingDirectoryFactory, modify the
solrconfig.xml to use the
StandardDirectoryFactory. For example, change the directoryFactory element
in the solrconfig.xml file as
follows:
<directoryFactory class="solr.StandardDirectoryFactory" name="DirectoryFactory"/>