diff --git a/spark/src/main/scala/org/apache/spark/sql/delta/util/DeltaCommitFileProvider.scala b/spark/src/main/scala/org/apache/spark/sql/delta/util/DeltaCommitFileProvider.scala
index 3d9f4ff793f..c91dc70f6d9 100644
--- a/spark/src/main/scala/org/apache/spark/sql/delta/util/DeltaCommitFileProvider.scala
+++ b/spark/src/main/scala/org/apache/spark/sql/delta/util/DeltaCommitFileProvider.scala
@@ -61,6 +61,9 @@ case class DeltaCommitFileProvider(
     }
   }
 
+  /**
+   * Lists unbackfilled delta files in a sorted order without incurring additional IO operations.
+   */
   def listSortedUnbackfilledDeltaFiles(startVersionOpt: Option[Long] = None): Seq[(Long, Path)] = {
     val minVersion = startVersionOpt.getOrElse(minUnbackfilledVersion)
     uuids