Remove the MLT API

docs/reference/migration/index.asciidoc

@@ -19,7 +19,8 @@ See <<setup-upgrade>> for more info.
 
 include::migrate_2_0.asciidoc[]
 
+include::migrate_1_6.asciidoc[]
+
 include::migrate_1_4.asciidoc[]
 
 include::migrate_1_0.asciidoc[]
-

docs/reference/migration/migrate_1_6.asciidoc

@@ -0,0 +1,10 @@
+[[breaking-changes-1.6]]
+== Breaking changes in 1.6
+
+This section discusses the changes that you need to be aware of when migrating
+your application from Elasticsearch 1.x to Elasticsearch 1.6.
+
+[float]
+=== More Like This API
+
+The More Like This API query has been deprecated and will be removed in 2.0. Instead use the <<query-dsl-mlt-query, More Like This Query>>.

docs/reference/migration/migrate_2_0.asciidoc

@@ -24,10 +24,10 @@ The following deprecated methods have been removed:
 
 Partial fields were deprecated since 1.0.0beta1 in favor of <<search-request-source-filtering,source filtering>>.
 
-=== More Like This Field
+=== More Like This
 
-The More Like This Field query has been removed in favor of the <<query-dsl-mlt-query, More Like This Query>>
-restrained set to a specific `field`.
+The More Like This API and the More Like This Field query have been removed in
+favor of the <<query-dsl-mlt-query, More Like This Query>>.
 
 === Routing
 

rest-api-spec/test/mlt/10_basic.yaml

@@ -30,11 +30,16 @@
            wait_for_status: green
 
   - do:
-      mlt:
-          index:  test_1
-          type:   test
-          id:     1
-          mlt_fields: title
-
+      search:
+          index:   test_1
+          type:    test
+          body:
+            query:
+              more_like_this:
+                like:
+                  -
+                    _id: 1
+                fields: title
+
   - match: {hits.total: 0}
 

src/main/java/org/elasticsearch/action/ActionModule.java

@@ -139,8 +139,6 @@
 import org.elasticsearch.action.indexedscripts.get.TransportGetIndexedScriptAction;
 import org.elasticsearch.action.indexedscripts.put.PutIndexedScriptAction;
 import org.elasticsearch.action.indexedscripts.put.TransportPutIndexedScriptAction;
-import org.elasticsearch.action.mlt.MoreLikeThisAction;
-import org.elasticsearch.action.mlt.TransportMoreLikeThisAction;
 import org.elasticsearch.action.percolate.*;
 import org.elasticsearch.action.search.*;
 import org.elasticsearch.action.search.type.*;
@@ -293,7 +291,6 @@ protected void configure() {
                 TransportSearchScrollQueryAndFetchAction.class
         );
         registerAction(MultiSearchAction.INSTANCE, TransportMultiSearchAction.class);
-        registerAction(MoreLikeThisAction.INSTANCE, TransportMoreLikeThisAction.class);
         registerAction(PercolateAction.INSTANCE, TransportPercolateAction.class);
         registerAction(MultiPercolateAction.INSTANCE, TransportMultiPercolateAction.class, TransportShardMultiPercolateAction.class);
         registerAction(ExplainAction.INSTANCE, TransportExplainAction.class);