percolator: remove deprecated map_unmapped_fields_as_string setting

docs/reference/migration/migrate_7_0.asciidoc

@@ -32,6 +32,7 @@ Elasticsearch 6.x in order to be readable by Elasticsearch 7.x.
 * <<breaking_70_analysis_changes>>
 * <<breaking_70_api_changes>>
 * <<breaking_70_java_changes>>
+* <<breaking_70_settings_changes>>
 
 
 include::migrate_7_0/aggregations.asciidoc[]
@@ -43,3 +44,4 @@ include::migrate_7_0/search.asciidoc[]
 include::migrate_7_0/plugins.asciidoc[]
 include::migrate_7_0/api.asciidoc[]
 include::migrate_7_0/java.asciidoc[]
+include::migrate_7_0/settings.asciidoc[]

docs/reference/migration/migrate_7_0/settings.asciidoc

@@ -0,0 +1,8 @@
+[[breaking_70_settings_changes]]
+
+=== Settings changes
+
+==== Percolator
+
+* The deprecated `index.percolator.map_unmapped_fields_as_string` setting has been removed in favour of
+  the `index.percolator.map_unmapped_fields_as_text` setting.

modules/percolator/src/main/java/org/elasticsearch/percolator/PercolatorFieldMapper.java

@@ -50,8 +50,6 @@ import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.collect.Tuple;
 import org.elasticsearch.common.hash.MurmurHash3;
 import org.elasticsearch.common.io.stream.OutputStreamStreamOutput;
-import org.elasticsearch.common.logging.DeprecationLogger;
-import org.elasticsearch.common.logging.Loggers;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.xcontent.XContentBuilder;
@@ -97,13 +95,9 @@ import static org.elasticsearch.index.query.AbstractQueryBuilder.parseInnerQuery
 public class PercolatorFieldMapper extends FieldMapper {
 
     static final XContentType QUERY_BUILDER_CONTENT_TYPE = XContentType.SMILE;
-    @Deprecated
-    static final Setting<Boolean> INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING = Setting.boolSetting(
-        "index.percolator.map_unmapped_fields_as_string", false, Setting.Property.IndexScope, Setting.Property.Deprecated);
     static final Setting<Boolean> INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING = Setting.boolSetting(
         "index.percolator.map_unmapped_fields_as_text", false, Setting.Property.IndexScope);
     static final String CONTENT_TYPE = "percolator";
-    private static final DeprecationLogger DEPRECATION_LOGGER = new DeprecationLogger(Loggers.getLogger(PercolatorFieldMapper.class));
     private static final FieldType FIELD_TYPE = new FieldType();
 
     static final byte FIELD_VALUE_SEPARATOR = 0;  // nul code point
@@ -359,21 +353,8 @@ public class PercolatorFieldMapper extends FieldMapper {
     }
 
     private static boolean getMapUnmappedFieldAsText(Settings indexSettings) {
-        if (INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING.exists(indexSettings) &&
-                INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.exists(indexSettings)) {
-            throw new IllegalArgumentException("Either specify [" + INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.getKey() +
-                    "] or [" + INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING.getKey() + "] setting, not both");
-        }
-
-        if (INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.exists(indexSettings)) {
-            DEPRECATION_LOGGER.deprecatedAndMaybeLog(INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.getKey(),
-                    "The [" + INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.getKey() +
-                    "] setting is deprecated in favour for the [" + INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING.getKey() + "] setting");
-            return INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING.get(indexSettings);
-        } else {
         return INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING.get(indexSettings);
     }
-    }
 
     @Override
     public FieldMapper updateFieldType(Map<String, MappedFieldType> fullNameToFieldType) {

modules/percolator/src/main/java/org/elasticsearch/percolator/PercolatorPlugin.java

@@ -57,8 +57,7 @@ public class PercolatorPlugin extends Plugin implements MapperPlugin, SearchPlug
 
     @Override
     public List<Setting<?>> getSettings() {
-        return Arrays.asList(PercolatorFieldMapper.INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING,
+        return Arrays.asList(PercolatorFieldMapper.INDEX_MAP_UNMAPPED_FIELDS_AS_TEXT_SETTING);
-            PercolatorFieldMapper.INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING);
     }
 
     @Override

modules/percolator/src/test/java/org/elasticsearch/percolator/PercolatorQuerySearchTests.java

@@ -21,7 +21,6 @@ package org.elasticsearch.percolator;
 import org.apache.lucene.search.join.ScoreMode;
 import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.action.support.WriteRequest;
-import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.xcontent.XContentBuilder;
 import org.elasticsearch.common.xcontent.XContentFactory;
@@ -220,21 +219,4 @@ public class PercolatorQuerySearchTests extends ESSingleNodeTestCase {
         assertSearchHits(response, "1");
     }
 
-    public void testMapUnmappedFieldAsString() throws IOException {
-        Settings.Builder settings = Settings.builder()
-            .put("index.percolator.map_unmapped_fields_as_string", true);
-        createIndex("test", settings.build(), "query", "query", "type=percolator");
-        client().prepareIndex("test", "query", "1")
-            .setSource(jsonBuilder().startObject().field("query", matchQuery("field1", "value")).endObject()).get();
-        client().admin().indices().prepareRefresh().get();
-
-        SearchResponse response = client().prepareSearch("test")
-            .setQuery(new PercolateQueryBuilder("query", jsonBuilder().startObject().field("field1", "value").endObject().bytes(),
-                XContentType.JSON))
-            .get();
-        assertHitCount(response, 1);
-        assertSearchHits(response, "1");
-        assertSettingDeprecationsAndWarnings(new Setting[]{PercolatorFieldMapper.INDEX_MAP_UNMAPPED_FIELDS_AS_STRING_SETTING});
-    }
-
 }