Merge branch '9.1' into backport/9.1/130033

Author: prwhelan

.buildkite/scripts/run-bc-upgrade-tests.sh

@@ -24,7 +24,7 @@ select(.active_release == true) |
 (.build_candidates | to_entries | sort_by(.value.completed_at))) |
 last | .value.manifest_url")"
 
-if [[ -z "$MANIFEST_URL" ]]; then
+if [[ -z "$MANIFEST_URL" ]] || [[ "$MANIFEST_URL" == "null" ]]; then
    echo "No snapshots or build candidates for branch [$BUILDKITE_BRANCH]."
    echo "Skipping BC upgrade tests."
    exit 0

.buildkite/scripts/run-pr-upgrade-tests.sh

@@ -18,7 +18,8 @@ fi
 
 # Identify the merge base of the current commit (branch) and the base branch of the pull request.
 # PR upgrade tests are run from the merge base to the current commit.
-BASE_COMMIT=$(git merge-base $BUILDKITE_PULL_REQUEST_BASE_BRANCH $BUILDKITE_COMMIT)
+git fetch origin $BUILDKITE_PULL_REQUEST_BASE_BRANCH
+BASE_COMMIT=$(git merge-base origin/$BUILDKITE_PULL_REQUEST_BASE_BRANCH $BUILDKITE_COMMIT)
 
 VERSION=$(sed -n 's/^elasticsearch[[:space:]]*=[[:space:]]*\(.*\)/\1/p' build-tools-internal/version.properties)
 

muted-tests.yml

@@ -561,8 +561,6 @@ tests:
 - class: org.elasticsearch.xpack.inference.qa.mixed.CohereServiceMixedIT
   method: testCohereEmbeddings
   issue: https://github.com/elastic/elasticsearch/issues/130010
-- class: org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT
-  issue: https://github.com/elastic/elasticsearch/issues/128224
 - class: org.elasticsearch.cluster.metadata.ComposableIndexTemplateTests
   method: testMergeEmptyMappingsIntoTemplateWithNonEmptySettings
   issue: https://github.com/elastic/elasticsearch/issues/130050
@@ -574,6 +572,9 @@ tests:
 - class: org.elasticsearch.xpack.esql.qa.single_node.GenerativeIT
   method: test
   issue: https://github.com/elastic/elasticsearch/issues/130067
+- class: org.elasticsearch.compute.operator.topn.TopNOperatorTests
+  method: testSimpleWithCranky
+  issue: https://github.com/elastic/elasticsearch/issues/130215
 
 # Examples:
 #

x-pack/plugin/esql/qa/testFixtures/src/main/resources/mapping-colors.json

@@ -13,7 +13,9 @@
       "type": "dense_vector",
       "similarity": "l2_norm",
       "index_options": {
-        "type": "hnsw"
+        "type": "hnsw",
+        "m": 16,
+        "ef_construction": 100
       }
     }
   }

x-pack/plugin/esql/qa/testFixtures/src/main/resources/mapping-dense_vector.json

@@ -5,7 +5,12 @@
     },
     "vector": {
       "type": "dense_vector",
-      "similarity": "l2_norm"
+      "similarity": "l2_norm",
+      "index_options": {
+        "type": "hnsw",
+        "m": 16,
+        "ef_construction": 100
+      }
     }
   }
 }

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/action/EsqlActionIT.java

@@ -1680,6 +1680,7 @@ public void testQueryOnEmptyDataIndex() {
     }
 
     public void testGroupingStatsOnMissingFields() {
+        assumeTrue("Pragmas are only allowed in snapshots", Build.current().isSnapshot());
         assertAcked(client().admin().indices().prepareCreate("missing_field_index").setMapping("data", "type=long"));
         long oneValue = between(1, 1000);
         indexDoc("missing_field_index", "1", "data", oneValue);