add support for scored named queries

CHANGELOG.md

@@ -139,6 +139,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Remove concurrent segment search feature flag for GA launch ([#12074](https://github.com/opensearch-project/OpenSearch/pull/12074))
 - Enable Fuzzy codec for doc id fields using a bloom filter ([#11022](https://github.com/opensearch-project/OpenSearch/pull/11022))
 - [Metrics Framework] Adds support for Histogram metric ([#12062](https://github.com/opensearch-project/OpenSearch/pull/12062))
+- Support for returning scores in matched queries ([#11626](https://github.com/opensearch-project/OpenSearch/pull/11626))
 
 ### Dependencies
 - Bumps jetty version to 9.4.52.v20230823 to fix GMS-2023-1857 ([#9822](https://github.com/opensearch-project/OpenSearch/pull/9822))

rest-api-spec/src/main/resources/rest-api-spec/api/search.json

@@ -229,6 +229,11 @@
       "search_pipeline": {
         "type": "string",
         "description": "The search pipeline to use to execute this request"
+      },
+      "include_named_queries_score":{
+        "type": "boolean",
+        "description":"Indicates whether hit.matched_queries should be rendered as a map that includes the name of the matched query associated with its score (true) or as an array containing the name of the matched queries (false)",
+        "default":false
       }
     },
     "body":{

rest-api-spec/src/main/resources/rest-api-spec/test/search/350_matched_queries.yml

@@ -0,0 +1,103 @@
+setup:
+  - skip:
+      version: " - 2.12.0"
+      reason: "implemented for versions post 2.12.0"
+
+---
+"matched queries":
+  - do:
+      indices.create:
+        index: test
+
+  - do:
+      bulk:
+        refresh: true
+        body:
+          - '{ "index" : { "_index" : "test_1", "_id" : "1" } }'
+          - '{"field" : 1 }'
+          - '{ "index" : { "_index" : "test_1", "_id" : "2" } }'
+          - '{"field" : [1, 2] }'
+
+  - do:
+      search:
+        index: test_1
+        body:
+          query:
+            bool: {
+              should: [
+                {
+                  match: {
+                    field: {
+                      query: 1,
+                      _name: match_field_1
+                    }
+                  }
+                },
+                {
+                  match: {
+                    field: {
+                      query: 2,
+                      _name: match_field_2,
+                      boost: 10
+                    }
+                  }
+                }
+              ]
+            }
+
+  - match: {hits.total.value: 2}
+  - length: {hits.hits.0.matched_queries: 2}
+  - match: {hits.hits.0.matched_queries: [ "match_field_1", "match_field_2" ]}
+  - length: {hits.hits.1.matched_queries: 1}
+  - match: {hits.hits.1.matched_queries: [ "match_field_1" ]}
+
+---
+
+"matched queries with scores":
+  - do:
+      indices.create:
+        index: test
+
+  - do:
+      bulk:
+        refresh: true
+        body:
+          - '{ "index" : { "_index" : "test_1", "_id" : "1" } }'
+          - '{"field" : 1 }'
+          - '{ "index" : { "_index" : "test_1", "_id" : "2" } }'
+          - '{"field" : [1, 2] }'
+
+  - do:
+      search:
+        include_named_queries_score: true
+        index: test_1
+        body:
+          query:
+            bool: {
+              should: [
+                {
+                  match: {
+                    field: {
+                      query: 1,
+                      _name: match_field_1
+                    }
+                  }
+                },
+                {
+                  match: {
+                    field: {
+                      query: 2,
+                      _name: match_field_2,
+                      boost: 10
+                    }
+                  }
+                }
+              ]
+            }
+
+  - match: { hits.total.value: 2 }
+  - length: { hits.hits.0.matched_queries: 2 }
+  - match: { hits.hits.0.matched_queries.match_field_1: 1 }
+  - match: { hits.hits.0.matched_queries.match_field_2: 10 }
+  - length: { hits.hits.1.matched_queries: 1 }
+  - match: { hits.hits.1.matched_queries.match_field_1: 1 }

server/src/internalClusterTest/java/org/opensearch/indices/recovery/IndexPrimaryRelocationIT.java

@@ -66,19 +66,16 @@ public void testPrimaryRelocationWhileIndexing() throws Exception {
         ensureGreen("test");
         AtomicInteger numAutoGenDocs = new AtomicInteger();
         final AtomicBoolean finished = new AtomicBoolean(false);
-        Thread indexingThread = new Thread() {
-            @Override
-            public void run() {
-                while (finished.get() == false && numAutoGenDocs.get() < 10_000) {
-                    IndexResponse indexResponse = client().prepareIndex("test").setId("id").setSource("field", "value").get();
-                    assertEquals(DocWriteResponse.Result.CREATED, indexResponse.getResult());
-                    DeleteResponse deleteResponse = client().prepareDelete("test", "id").get();
-                    assertEquals(DocWriteResponse.Result.DELETED, deleteResponse.getResult());
-                    client().prepareIndex("test").setSource("auto", true).get();
-                    numAutoGenDocs.incrementAndGet();
-                }
+        Thread indexingThread = new Thread(() -> {
+            while (finished.get() == false && numAutoGenDocs.get() < 10_000) {
+                IndexResponse indexResponse = client().prepareIndex("test").setId("id").setSource("field", "value").get();
+                assertEquals(DocWriteResponse.Result.CREATED, indexResponse.getResult());
+                DeleteResponse deleteResponse = client().prepareDelete("test", "id").get();
+                assertEquals(DocWriteResponse.Result.DELETED, deleteResponse.getResult());
+                client().prepareIndex("test").setSource("auto", true).get();
+                numAutoGenDocs.incrementAndGet();
             }
-        };
+        });
         indexingThread.start();
 
         ClusterState initialState = client().admin().cluster().prepareState().get().getState();

server/src/internalClusterTest/java/org/opensearch/search/fetch/subphase/MatchedQueriesIT.java

@@ -61,7 +61,9 @@
 import static org.opensearch.search.SearchService.CLUSTER_CONCURRENT_SEGMENT_SEARCH_SETTING;
 import static org.opensearch.test.hamcrest.OpenSearchAssertions.assertHitCount;
 import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.greaterThan;
 import static org.hamcrest.Matchers.hasItemInArray;
+import static org.hamcrest.Matchers.hasKey;
 
 public class MatchedQueriesIT extends ParameterizedStaticSettingsOpenSearchIntegTestCase {
 
@@ -95,15 +97,18 @@ public void testSimpleMatchedQueryFromFilteredQuery() throws Exception {
                             .should(rangeQuery("number").gte(2).queryName("test2"))
                     )
             )
+            .setIncludeNamedQueriesScore(true)
             .get();
         assertHitCount(searchResponse, 3L);
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("3") || hit.getId().equals("2")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("test2"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("test2"));
+                assertThat(hit.getMatchedQueryScore("test2"), equalTo(1f));
             } else if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("test1"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("test1"));
+                assertThat(hit.getMatchedQueryScore("test1"), equalTo(1f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -113,15 +118,18 @@ public void testSimpleMatchedQueryFromFilteredQuery() throws Exception {
             .setQuery(
                 boolQuery().should(rangeQuery("number").lte(2).queryName("test1")).should(rangeQuery("number").gt(2).queryName("test2"))
             )
+            .setIncludeNamedQueriesScore(true)
             .get();
         assertHitCount(searchResponse, 3L);
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1") || hit.getId().equals("2")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("test1"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("test1"));
+                assertThat(hit.getMatchedQueryScore("test1"), equalTo(1f));
             } else if (hit.getId().equals("3")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("test2"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("test2"));
+                assertThat(hit.getMatchedQueryScore("test2"), equalTo(1f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -147,12 +155,15 @@ public void testSimpleMatchedQueryFromTopLevelFilter() throws Exception {
         assertHitCount(searchResponse, 3L);
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(2));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("name"));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("title"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(2));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("name"));
+                assertThat(hit.getMatchedQueryScore("name"), greaterThan(0f));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("title"));
+                assertThat(hit.getMatchedQueryScore("title"), greaterThan(0f));
             } else if (hit.getId().equals("2") || hit.getId().equals("3")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("name"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("name"));
+                assertThat(hit.getMatchedQueryScore("name"), greaterThan(0f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -168,12 +179,15 @@ public void testSimpleMatchedQueryFromTopLevelFilter() throws Exception {
         assertHitCount(searchResponse, 3L);
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(2));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("name"));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("title"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(2));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("name"));
+                assertThat(hit.getMatchedQueryScore("name"), greaterThan(0f));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("title"));
+                assertThat(hit.getMatchedQueryScore("title"), greaterThan(0f));
             } else if (hit.getId().equals("2") || hit.getId().equals("3")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("name"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("name"));
+                assertThat(hit.getMatchedQueryScore("name"), greaterThan(0f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -197,9 +211,11 @@ public void testSimpleMatchedQueryFromTopLevelFilterAndFilteredQuery() throws Ex
         assertHitCount(searchResponse, 3L);
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1") || hit.getId().equals("2") || hit.getId().equals("3")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(2));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("name"));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("title"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(2));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("name"));
+                assertThat(hit.getMatchedQueryScore("name"), greaterThan(0f));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("title"));
+                assertThat(hit.getMatchedQueryScore("title"), greaterThan(0f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -231,13 +247,15 @@ public void testRegExpQuerySupportsName() throws InterruptedException {
 
         SearchResponse searchResponse = client().prepareSearch()
             .setQuery(QueryBuilders.regexpQuery("title", "title1").queryName("regex"))
+            .setIncludeNamedQueriesScore(true)
             .get();
         assertHitCount(searchResponse, 1L);
 
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("regex"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("regex"));
+                assertThat(hit.getMatchedQueryScore("regex"), equalTo(1f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -252,15 +270,17 @@ public void testPrefixQuerySupportsName() throws InterruptedException {
         refresh();
         indexRandomForConcurrentSearch("test1");
 
-        SearchResponse searchResponse = client().prepareSearch()
+        var query = client().prepareSearch()
             .setQuery(QueryBuilders.prefixQuery("title", "title").queryName("prefix"))
-            .get();
+            .setIncludeNamedQueriesScore(true);
+        var searchResponse = query.get();
         assertHitCount(searchResponse, 1L);
 
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("prefix"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("prefix"));
+                assertThat(hit.getMatchedQueryScore("prefix"), equalTo(1f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -282,8 +302,9 @@ public void testFuzzyQuerySupportsName() throws InterruptedException {
 
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("fuzzy"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("fuzzy"));
+                assertThat(hit.getMatchedQueryScore("fuzzy"), greaterThan(0f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -300,13 +321,15 @@ public void testWildcardQuerySupportsName() throws InterruptedException {
 
         SearchResponse searchResponse = client().prepareSearch()
             .setQuery(QueryBuilders.wildcardQuery("title", "titl*").queryName("wildcard"))
+            .setIncludeNamedQueriesScore(true)
             .get();
         assertHitCount(searchResponse, 1L);
 
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("wildcard"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("wildcard"));
+                assertThat(hit.getMatchedQueryScore("wildcard"), equalTo(1f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -328,8 +351,9 @@ public void testSpanFirstQuerySupportsName() throws InterruptedException {
 
         for (SearchHit hit : searchResponse.getHits()) {
             if (hit.getId().equals("1")) {
-                assertThat(hit.getMatchedQueries().length, equalTo(1));
-                assertThat(hit.getMatchedQueries(), hasItemInArray("span"));
+                assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                assertThat(hit.getMatchedQueriesAndScores(), hasKey("span"));
+                assertThat(hit.getMatchedQueryScore("span"), greaterThan(0f));
             } else {
                 fail("Unexpected document returned with id " + hit.getId());
             }
@@ -363,11 +387,13 @@ public void testMatchedWithShould() throws Exception {
             assertHitCount(searchResponse, 2L);
             for (SearchHit hit : searchResponse.getHits()) {
                 if (hit.getId().equals("1")) {
-                    assertThat(hit.getMatchedQueries().length, equalTo(1));
-                    assertThat(hit.getMatchedQueries(), hasItemInArray("dolor"));
+                    assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                    assertThat(hit.getMatchedQueriesAndScores(), hasKey("dolor"));
+                    assertThat(hit.getMatchedQueryScore("dolor"), greaterThan(0f));
                 } else if (hit.getId().equals("2")) {
-                    assertThat(hit.getMatchedQueries().length, equalTo(1));
-                    assertThat(hit.getMatchedQueries(), hasItemInArray("elit"));
+                    assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+                    assertThat(hit.getMatchedQueriesAndScores(), hasKey("elit"));
+                    assertThat(hit.getMatchedQueryScore("elit"), greaterThan(0f));
                 } else {
                     fail("Unexpected document returned with id " + hit.getId());
                 }
@@ -391,7 +417,10 @@ public void testMatchedWithWrapperQuery() throws Exception {
         for (QueryBuilder query : queries) {
             SearchResponse searchResponse = client().prepareSearch().setQuery(query).get();
             assertHitCount(searchResponse, 1L);
-            assertThat(searchResponse.getHits().getAt(0).getMatchedQueries()[0], equalTo("abc"));
+            SearchHit hit = searchResponse.getHits().getAt(0);
+            assertThat(hit.getMatchedQueriesAndScores().size(), equalTo(1));
+            assertThat(hit.getMatchedQueriesAndScores(), hasKey("abc"));
+            assertThat(hit.getMatchedQueryScore("abc"), greaterThan(0f));
         }
     }
 }