diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index baba647e055..1d2524e7593 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -122,6 +122,10 @@ Release 2.0.5-beta - UNRELEASED
     DBInputFormat.DBRecordReader for binary compatibility with 1.x mapred APIs.
     (Zhijie Shen via vinodkv)
 
+    MAPREDUCE-5273. Bring back a couple of protected variables in mapred and
+    mapreduce CombineFileRecordReader for binary compatibility with 1.x APIs.
+    (Mayank Bansal via vinodkv)
+
   OPTIMIZATIONS
 
     MAPREDUCE-4974. Optimising the LineRecordReader initialize() method 
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/CombineFileRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/CombineFileRecordReader.java
index 37980dddd95..1abaef260c5 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/CombineFileRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/CombineFileRecordReader.java
@@ -49,7 +49,9 @@ public class CombineFileRecordReader<K, V> implements RecordReader<K, V> {
   protected CombineFileSplit split;
   protected JobConf jc;
   protected Reporter reporter;
+  protected Class<RecordReader<K, V>> rrClass;
   protected Constructor<RecordReader<K, V>> rrConstructor;
+  protected FileSystem fs;
   
   protected int idx;
   protected long progress;
@@ -104,6 +106,7 @@ public class CombineFileRecordReader<K, V> implements RecordReader<K, V> {
     throws IOException {
     this.split = split;
     this.jc = job;
+    this.rrClass = rrClass;
     this.reporter = reporter;
     this.idx = 0;
     this.curReader = null;
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.java
index 8749362c221..fb86cbafc12 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.java
@@ -46,7 +46,9 @@ public class CombineFileRecordReader<K, V> extends RecordReader<K, V> {
                                           Integer.class};
 
   protected CombineFileSplit split;
+  protected Class<? extends RecordReader<K,V>> rrClass;
   protected Constructor<? extends RecordReader<K,V>> rrConstructor;
+  protected FileSystem fs;
   protected TaskAttemptContext context;
   
   protected int idx;
@@ -109,6 +111,7 @@ public class CombineFileRecordReader<K, V> extends RecordReader<K, V> {
     throws IOException {
     this.split = split;
     this.context = context;
+    this.rrClass = rrClass;
     this.idx = 0;
     this.curReader = null;
     this.progress = 0;