diff --git a/core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala b/core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala
index 4cc5bcb7f9bafa600a8fa42b87c723dffbddfa09..a0bfce340292a60fc595dfe2a53e86bb85bd9194 100644
--- a/core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala
+++ b/core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala
@@ -386,6 +386,7 @@ private[spark] class MemoryStore(
 
   def remove(blockId: BlockId): Boolean = memoryManager.synchronized {
     val entry = entries.synchronized {
+      println(s"Hello, world!")
       entries.remove(blockId)
     }
     if (entry != null) {