From e7d03636a098675f88bb3907c8ca6a64ea0ca6d8 Mon Sep 17 00:00:00 2001
From: Harsh J <harsh@apache.org>
Date: Sun, 6 May 2012 11:20:16 +0000
Subject: [PATCH] HADOOP-8323. Revert HADOOP-7940, cause it may cause a
 performance regression. (harsh)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1334603 13f79535-47bb-0310-9956-ffa450edef68
---
 hadoop-common-project/hadoop-common/CHANGES.txt        |  2 --
 .../src/main/java/org/apache/hadoop/io/Text.java       |  1 -
 .../src/test/java/org/apache/hadoop/io/TestText.java   | 10 ----------
 3 files changed, 13 deletions(-)

diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 558c9b8962..a97d878769 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -326,8 +326,6 @@ Release 2.0.0 - UNRELEASED
 
     HADOOP-8104. Inconsistent Jackson versions (tucu)
 
-    HADOOP-7940. The Text.clear() method does not clear the bytes as intended. (Csaba Miklos via harsh)
-
     HADOOP-8119. Fix javac warnings in TestAuthenticationFilter in hadoop-auth.
     (szetszwo)
 
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/Text.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/Text.java
index 5c52883ebf..e38dd3c79a 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/Text.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/Text.java
@@ -239,7 +239,6 @@ public void append(byte[] utf8, int start, int len) {
    */
   public void clear() {
     length = 0;
-    bytes = EMPTY_BYTES;
   }
 
   /*
diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/TestText.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/TestText.java
index a756a57dae..a7718bfba7 100644
--- a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/TestText.java
+++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/TestText.java
@@ -192,16 +192,6 @@ public void testFind() throws Exception {
     assertTrue(text.find("\u20ac", 5)==11);
   }
 
-  public void testClear() {
-	Text text = new Text();
-	assertEquals("", text.toString());
-	assertEquals(0, text.getBytes().length);
-	text = new Text("abcd\u20acbdcd\u20ac");
-	text.clear();
-	assertEquals("", text.toString());
-	assertEquals(0, text.getBytes().length);
-  }
-
   public void testFindAfterUpdatingContents() throws Exception {
     Text text = new Text("abcd");
     text.set("a".getBytes());