catch uoe

Author: bugmakerrrrrr

server/src/main/java/org/opensearch/index/mapper/DerivedFieldType.java

@@ -477,7 +477,7 @@ public Query geoShapeQuery(Geometry shape, String fieldName, ShapeRelation relat
 
     @Override
     public Query existsQuery(QueryShardContext context) {
-        throw new IllegalArgumentException("Field [" + name() + "] of type [" + typeName() + "] does not support exist queries");
+        throw new UnsupportedOperationException("Field [" + name() + "] of type [" + typeName() + "] does not support exist queries");
     }
 
     @Override

server/src/main/java/org/opensearch/index/query/ExistsQueryBuilder.java

@@ -205,7 +205,7 @@ private static Query newObjectFieldExistsQuery(QueryShardContext context, String
             try {
                 Query existsQuery = context.getMapperService().fieldType(field).existsQuery(context);
                 booleanQuery.add(existsQuery, Occur.SHOULD);
-            } catch (Exception e) {
+            } catch (UnsupportedOperationException e) {
                 // ignore some subfields which not support exists query
                 // if none of the subfields support the exists query, this is equivalent to MatchNoDocsQuery
             }

server/src/test/java/org/opensearch/index/query/ExistsQueryBuilderTests.java

@@ -176,7 +176,7 @@ public void testFromJson() throws IOException {
     public void testObjectFieldWithDerivedSubField() throws IOException {
         QueryShardContext shardContext = createShardContext();
         final ExistsQueryBuilder queryBuilder1 = new ExistsQueryBuilder("raw.derived_keyword");
-        expectThrows(IllegalArgumentException.class, () -> queryBuilder1.toQuery(shardContext));
+        expectThrows(UnsupportedOperationException.class, () -> queryBuilder1.toQuery(shardContext));
         final ExistsQueryBuilder queryBuilder2 = new ExistsQueryBuilder("raw");
         Query actual = queryBuilder2.toQuery(shardContext);
         Query expected = new ConstantScoreQuery(