The Nori Korean analyzer looks good to go, but since it is only available with ES 6.4.2+, we can't build it out yet.
- Implement the configs in AnalysisConfigBuilder and add tests.
- The command line version of the Elasticsearch config I used for testing so far is on MediaWiki.
- Determine whether we need to change the config for plain field and the completion suggester.
For future reference: when it comes time to re-index, we will need to figure out how re-indexing Korean with a very different analyzer interacts with LTR.