From 4b846dd0e0cb0508236ad01b40470859c9833dcd Mon Sep 17 00:00:00 2001
From: Liang-Chi Hsieh <viirya@gmail.com>
Date: Mon, 1 Feb 2016 09:58:56 +0000
Subject: [PATCH] Remove unnecessary bit operation.

---
 .../main/java/org/apache/spark/memory/TaskMemoryManager.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/org/apache/spark/memory/TaskMemoryManager.java b/core/src/main/java/org/apache/spark/memory/TaskMemoryManager.java
index d31eb449eb82..d2a88864f7ac 100644
--- a/core/src/main/java/org/apache/spark/memory/TaskMemoryManager.java
+++ b/core/src/main/java/org/apache/spark/memory/TaskMemoryManager.java
@@ -312,7 +312,7 @@ public static long encodePageNumberAndOffset(int pageNumber, long offsetInPage)
 
   @VisibleForTesting
   public static int decodePageNumber(long pagePlusOffsetAddress) {
-    return (int) ((pagePlusOffsetAddress & MASK_LONG_UPPER_13_BITS) >>> OFFSET_BITS);
+    return (int) (pagePlusOffsetAddress >>> OFFSET_BITS);
   }
 
   private static long decodeOffset(long pagePlusOffsetAddress) {