ESQL: Handle release of 9.2 in test

server/src/main/resources/transport/definitions/referable/esql_resolve_fields_response_used.csv

@@ -0,0 +1 @@
+9204000,9185005

server/src/main/resources/transport/upper_bounds/9.2.csv

@@ -1 +1 @@
-min_transport_version,9185004
+esql_resolve_fields_response_used,9185005

server/src/main/resources/transport/upper_bounds/9.3.csv

@@ -1 +1 @@
-esql_resolve_fields_response_removed_min_tv,9203000
+esql_resolve_fields_response_used,9204000

x-pack/plugin/esql-core/src/main/java/org/elasticsearch/xpack/esql/core/type/DataType.java

@@ -984,8 +984,13 @@ Builder underConstruction() {
         }
     }
 
-    private static class DataTypesTransportVersions {
+    public static class DataTypesTransportVersions {
 
+        /**
+         * The first transport version after the PR that introduced geotile/geohash/geohex, resp.
+         * after 9.1. We didn't require transport versions at that point in time, as geotile/hash/hex require
+         * using specific functions to even occur in query plans.
+         */
         public static final TransportVersion INDEX_SOURCE = TransportVersion.fromName("index_source");
 
         public static final TransportVersion ESQL_DENSE_VECTOR_CREATED_VERSION = TransportVersion.fromName(

x-pack/plugin/esql/qa/server/src/main/java/org/elasticsearch/xpack/esql/qa/rest/AllSupportedFieldsTestCase.java

@@ -44,7 +44,10 @@
 import static org.elasticsearch.test.ListMatcher.matchesList;
 import static org.elasticsearch.test.MapMatcher.assertMap;
 import static org.elasticsearch.test.MapMatcher.matchesMap;
-import static org.elasticsearch.xpack.esql.action.EsqlResolveFieldsResponse.RESOLVE_FIELDS_RESPONSE_CREATED_TV;
+import static org.elasticsearch.xpack.esql.action.EsqlResolveFieldsResponse.RESOLVE_FIELDS_RESPONSE_USED_TV;
+import static org.elasticsearch.xpack.esql.core.type.DataType.DataTypesTransportVersions.ESQL_AGGREGATE_METRIC_DOUBLE_CREATED_VERSION;
+import static org.elasticsearch.xpack.esql.core.type.DataType.DataTypesTransportVersions.ESQL_DENSE_VECTOR_CREATED_VERSION;
+import static org.elasticsearch.xpack.esql.core.type.DataType.DataTypesTransportVersions.INDEX_SOURCE;
 import static org.hamcrest.Matchers.any;
 import static org.hamcrest.Matchers.anyOf;
 import static org.hamcrest.Matchers.containsString;
@@ -71,8 +74,6 @@
 public class AllSupportedFieldsTestCase extends ESRestTestCase {
     private static final Logger logger = LogManager.getLogger(FieldExtractorTestCase.class);
 
-    private static final TransportVersion INDEX_SOURCE = TransportVersion.fromName("index_source");
-
     @Rule(order = Integer.MIN_VALUE)
     public ProfileLogger profileLogger = new ProfileLogger();
 
@@ -329,6 +330,76 @@ public final void testFetchDenseVector() throws IOException {
         assertMap(indexToRow(columns, values), expectedAllValues);
     }
 
+    /**
+     * Tests fetching {@code aggregate_metric_double} if possible. Uses the {@code dense_vector_agg_metric_double_if_fns}
+     * work around if required.
+     */
+    public final void testFetchAggregateMetricDouble() throws IOException {
+        Map<String, Object> response;
+        try {
+            String request = """
+                | EVAL strjunk = TO_STRING(f_aggregate_metric_double)
+                | KEEP _index, f_aggregate_metric_double
+                | LIMIT 1000
+                """;
+            if (denseVectorAggMetricDoubleIfVersion() == false) {
+                request = """
+                    | EVAL junk = TO_AGGREGATE_METRIC_DOUBLE(1)  // workaround to enable fetching aggregate_metric_double
+                    """ + request;
+            }
+            response = esql(request);
+            if ((Boolean) response.get("is_partial")) {
+                Map<?, ?> clusters = (Map<?, ?>) response.get("_clusters");
+                Map<?, ?> details = (Map<?, ?>) clusters.get("details");
+
+                boolean foundError = false;
+                for (Map.Entry<?, ?> cluster : details.entrySet()) {
+                    String failures = cluster.getValue().toString();
+                    if (denseVectorAggMetricDoubleIfFns()) {
+                        throw new AssertionError("should correctly fetch the aggregate_metric_double: " + failures);
+                    }
+                    foundError |= failures.contains("doesn't understand data type [AGGREGATE_METRIC_DOUBLE]");
+                }
+                assertTrue("didn't find errors: " + details, foundError);
+                return;
+            }
+        } catch (ResponseException e) {
+            if (denseVectorAggMetricDoubleIfFns()) {
+                throw new AssertionError("should correctly fetch the aggregate_metric_double", e);
+            }
+            assertThat(
+                "old version should fail with this error",
+                EntityUtils.toString(e.getResponse().getEntity()),
+                anyOf(
+                    containsString("Unknown function [TO_AGGREGATE_METRIC_DOUBLE]"),
+                    containsString("Cannot use field [f_aggregate_metric_double] with unsupported type"),
+                    containsString("doesn't understand data type [AGGREGATE_METRIC_DOUBLE]")
+                )
+            );
+            // Failure is expected and fine
+            return;
+        }
+        List<?> columns = (List<?>) response.get("columns");
+        List<?> values = (List<?>) response.get("values");
+
+        MapMatcher expectedColumns = matchesMap().entry("f_aggregate_metric_double", "aggregate_metric_double").entry("_index", "keyword");
+        assertMap(nameToType(columns), expectedColumns);
+
+        MapMatcher expectedAllValues = matchesMap();
+        for (Map.Entry<String, NodeInfo> e : expectedIndices().entrySet()) {
+            String indexName = e.getKey();
+            NodeInfo nodeInfo = e.getValue();
+            MapMatcher expectedValues = matchesMap();
+            expectedValues = expectedValues.entry(
+                "f_aggregate_metric_double",
+                "{\"min\":-302.5,\"max\":702.3,\"sum\":200.0,\"value_count\":25}"
+            );
+            expectedValues = expectedValues.entry("_index", indexName);
+            expectedAllValues = expectedAllValues.entry(indexName, expectedValues);
+        }
+        assertMap(indexToRow(columns, values), expectedAllValues);
+    }
+
     private Map<String, Object> esql(String query) throws IOException {
         Request request = new Request("POST", "_query");
         XContentBuilder body = JsonXContent.contentBuilder().startObject();
@@ -473,21 +544,15 @@ private Matcher<?> expectedValue(DataType type, NodeInfo nodeInfo) throws IOExce
             case GEO_SHAPE -> equalTo("POINT (-71.34 41.12)");
             case NULL -> nullValue();
             case AGGREGATE_METRIC_DOUBLE -> {
-                /*
-                 * We need both AGGREGATE_METRIC_DOUBLE_CREATED and RESOLVE_FIELDS_RESPONSE_CREATED_TV
-                 * but RESOLVE_FIELDS_RESPONSE_CREATED_TV came last so it's enough to check just it.
-                 */
-                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_CREATED_TV) == false) {
+                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_USED_TV) == false
+                    || minVersion().supports(ESQL_AGGREGATE_METRIC_DOUBLE_CREATED_VERSION) == false) {
                     yield nullValue();
                 }
                 yield equalTo("{\"min\":-302.5,\"max\":702.3,\"sum\":200.0,\"value_count\":25}");
             }
             case DENSE_VECTOR -> {
-                /*
-                 * We need both DENSE_VECTOR_CREATED and RESOLVE_FIELDS_RESPONSE_CREATED_TV
-                 * but RESOLVE_FIELDS_RESPONSE_CREATED_TV came last so it's enough to check just it.
-                 */
-                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_CREATED_TV) == false) {
+                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_USED_TV) == false
+                    || minVersion().supports(ESQL_DENSE_VECTOR_CREATED_VERSION) == false) {
                     yield nullValue();
                 }
                 yield equalTo(List.of(0.5, 10.0, 5.9999995));
@@ -574,15 +639,24 @@ private Matcher<String> expectedType(DataType type) throws IOException {
             case BYTE, SHORT -> equalTo("integer");
             case HALF_FLOAT, SCALED_FLOAT, FLOAT -> equalTo("double");
             case NULL -> equalTo("keyword");
-            case AGGREGATE_METRIC_DOUBLE, DENSE_VECTOR -> {
-                /*
-                 * We need both <type_name>_CREATED and RESOLVE_FIELDS_RESPONSE_CREATED_TV
-                 * but RESOLVE_FIELDS_RESPONSE_CREATED_TV came last so it's enough to check just it.
-                 */
-                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_CREATED_TV) == false) {
+            case AGGREGATE_METRIC_DOUBLE -> {
+                // RESOLVE_FIELDS_RESPONSE_USED_TV is newer and technically sufficient to check.
+                // We also check for ESQL_AGGREGATE_METRIC_DOUBLE_CREATED_VERSION for clarity.
+                // Future data types added here should only require the TV when they were created,
+                // because it will be after RESOLVE_FIELDS_RESPONSE_USED_TV.
+                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_USED_TV) == false
+                    || minVersion().supports(ESQL_AGGREGATE_METRIC_DOUBLE_CREATED_VERSION) == false) {
+                    yield equalTo("unsupported");
+                }
+                yield equalTo("aggregate_metric_double");
+            }
+            case DENSE_VECTOR -> {
+                logger.error("ADFDAFAF " + minVersion());
+                if (minVersion().supports(RESOLVE_FIELDS_RESPONSE_USED_TV) == false
+                    || minVersion().supports(ESQL_DENSE_VECTOR_CREATED_VERSION) == false) {
                     yield equalTo("unsupported");
                 }
-                yield equalTo(type.esType());
+                yield equalTo("dense_vector");
             }
             default -> equalTo(type.esType());
         };

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlResolveFieldsResponse.java

@@ -12,17 +12,31 @@
 import org.elasticsearch.action.fieldcaps.FieldCapabilitiesResponse;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.xpack.esql.core.type.DataType;
 
 import java.io.IOException;
 
 public class EsqlResolveFieldsResponse extends ActionResponse {
-    public static final TransportVersion RESOLVE_FIELDS_RESPONSE_CREATED_TV = TransportVersion.fromName(
+    private static final TransportVersion RESOLVE_FIELDS_RESPONSE_CREATED_TV = TransportVersion.fromName(
         "esql_resolve_fields_response_created"
     );
     public static final TransportVersion RESOLVE_FIELDS_RESPONSE_REMOVED_MIN_TV = TransportVersion.fromName(
         "esql_resolve_fields_response_removed_min_tv"
     );
 
+    /**
+     * Marks when we started using the minimum transport version to determine whether a data type is supported on all nodes.
+     * This is about the coordinator - data nodes will be able to respond with the correct data as long as they're on the
+     * transport version required for the respective data types. See {@link DataType#supportedVersion()}.
+     * <p>
+     * Note: this is in 9.2.1, but not 9.2.0 - in 9.2.0 we resorted to workarounds to sometimes enable {@link DataType#DENSE_VECTOR} and
+     * {@link DataType#AGGREGATE_METRIC_DOUBLE}, even though 9.2.0 nodes already support these types.
+     * <p>
+     * This means that mixed clusters with a 9.2.1 coordinator and 9.2.0 data nodes will properly support these types,
+     * but a 9.2.0 coordinator with 9.2.1+ nodes will still require the workaround.
+     */
+    public static final TransportVersion RESOLVE_FIELDS_RESPONSE_USED_TV = TransportVersion.fromName("esql_resolve_fields_response_used");
+
     private final FieldCapabilitiesResponse caps;
 
     public EsqlResolveFieldsResponse(FieldCapabilitiesResponse caps) {