diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java
index 6fd46a5310..cb9b5e088e 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java
@@ -74,7 +74,7 @@ public FadvisedFileRegion(RandomAccessFile file, long position, long count,
   @Override
   public long transferTo(WritableByteChannel target, long position)
       throws IOException {
-    if (manageOsCache && readaheadPool != null) {
+    if (readaheadPool != null && readaheadLength > 0) {
       readaheadRequest = readaheadPool.readaheadStream(identifier, fd,
           getPosition() + position, readaheadLength,
           getPosition() + getCount(), readaheadRequest);