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Author: dnhatn

x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/lucene/read/SingletonOrdinalsBuilder.java

@@ -86,6 +86,8 @@ private BytesRefBlock tryBuildConstantBlock() {
         try {
             bytes = blockFactory.newConstantBytesRefVector(v, 1);
             ordinals = blockFactory.newConstantIntVector(0, ords.length);
+            // Ideally, we would return a ConstantBytesRefVector, but we return an ordinal constant block instead
+            // to ensure ordinal optimizations are applied when constant optimization is not available.
             final var result = new OrdinalBytesRefBlock(ordinals.asBlock(), bytes);
             success = true;
             return result;