Bool query early termination should also consider must_not clauses (elastic#115031) (elastic#115067)

* Bool query early termination should also consider must_not clauses

* Update docs/changelog/115031.yaml

(cherry picked from commit 5e381a3)

Co-authored-by: Elastic Machine <[email protected]>

Author: piergm

docs/changelog/115031.yaml

@@ -0,0 +1,5 @@
+pr: 115031
+summary: Bool query early termination should also consider `must_not` clauses
+area: Search
+type: enhancement
+issues: []

server/src/main/java/org/elasticsearch/index/query/BoolQueryBuilder.java

@@ -359,6 +359,7 @@ protected QueryBuilder doRewrite(QueryRewriteContext queryRewriteContext) throws
         if (mustClauses.size() == 0
             && filterClauses.size() == 0
             && shouldClauses.size() > 0
+            && mustNotClauses.size() == 0
             && newBuilder.shouldClauses.stream().allMatch(b -> b instanceof MatchNoneQueryBuilder)) {
             return new MatchNoneQueryBuilder("The \"" + getName() + "\" query was rewritten to a \"match_none\" query.");
         }

server/src/test/java/org/elasticsearch/index/query/BoolQueryBuilderTests.java

@@ -449,6 +449,12 @@ public void testRewriteWithMatchNone() throws IOException {
         rewritten = Rewriteable.rewrite(boolQueryBuilder, createSearchExecutionContext());
         assertNotEquals(new MatchNoneQueryBuilder(), rewritten);
 
+        boolQueryBuilder = new BoolQueryBuilder();
+        boolQueryBuilder.should(new WrapperQueryBuilder(new MatchNoneQueryBuilder().toString()));
+        boolQueryBuilder.mustNot(new TermQueryBuilder(TEXT_FIELD_NAME, "bar"));
+        rewritten = Rewriteable.rewrite(boolQueryBuilder, createSearchExecutionContext());
+        assertNotEquals(new MatchNoneQueryBuilder(), rewritten);
+
         boolQueryBuilder = new BoolQueryBuilder();
         boolQueryBuilder.filter(new TermQueryBuilder(TEXT_FIELD_NAME, "bar"));
         boolQueryBuilder.mustNot(new WrapperQueryBuilder(new WrapperQueryBuilder(new MatchAllQueryBuilder().toString()).toString()));