mlt: The MLT API has been removed, use More Like This Query
via Search
nodes_shutdown: The _shutdown API has been removed. Instead,
setup Elasticsearch to run as a service (see Running as a Service on Linux
(https://www.elastic.co/guide/en/elasticsearch/reference/2.0/setup-service.html) or
Running as a Service on Windows
(https://www.elastic.co/guide/en/elasticsearch/reference/2.0/setup-service-win.html))
or use the -p command line option to write the PID to a file.
index_status: _status route for the index API has been removed.
Replaced with the Indices Stats and Indices Recovery APIs.
mapping_delete: Elasticsearch dropped this route in their API. Instead
of deleting a mapping, delete the index and recreate with a new mapping.