MroongaSearch module that enables full-text search of various languages including Chinese, Japanes, and Korean, has been updated for Omeka S version 3.0 or later.
MroongaSearch uses Mroonga plugin, developed for MySQL and MariaDB. Unlike the Solr module, you only need to install this module - no special configuration is required. For the further information about installation can be found here:
If you are using Debian or Ubuntu, Mroonga plugin is officially included in the stable release.
See this thread for the detailed discussion: