diff --git a/core/src/main/scala/org/apache/spark/shuffle/ShuffleReader.scala b/core/src/main/scala/org/apache/spark/shuffle/ShuffleReader.scala
index b30e366d06006cdb057fed3457b7b6d657c66995..292e48314ee103f6f5692f18dae3dbdac72bd7f3 100644
--- a/core/src/main/scala/org/apache/spark/shuffle/ShuffleReader.scala
+++ b/core/src/main/scala/org/apache/spark/shuffle/ShuffleReader.scala
@@ -24,6 +24,10 @@ private[spark] trait ShuffleReader[K, C] {
   /** Read the combined key-values for this reduce task */
   def read(): Iterator[Product2[K, C]]
 
-  /** Close this reader */
-  def stop(): Unit
+  /**
+   * Close this reader.
+   * TODO: Add this back when we make the ShuffleReader a developer API that others can implement
+   * (at which point this will likely be necessary).
+   */
+  // def stop(): Unit
 }
diff --git a/core/src/main/scala/org/apache/spark/shuffle/hash/HashShuffleReader.scala b/core/src/main/scala/org/apache/spark/shuffle/hash/HashShuffleReader.scala
index 88a5f1e5ddf587eab7d3e1580db2d776581c9973..5baf45db45c17f8ded171e29174fc87cd04eb3bf 100644
--- a/core/src/main/scala/org/apache/spark/shuffle/hash/HashShuffleReader.scala
+++ b/core/src/main/scala/org/apache/spark/shuffle/hash/HashShuffleReader.scala
@@ -66,7 +66,4 @@ private[spark] class HashShuffleReader[K, C](
         aggregatedIter
     }
   }
-
-  /** Close this reader */
-  override def stop(): Unit = ???
 }