diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 2f755073d5e..29026bdf4a5 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -505,6 +505,10 @@ Trunk (Unreleased)
 
     HADOOP-9353. Activate native-win maven profile by default on Windows.
     (Arpit Agarwal via szetszwo)
+
+    HADOOP-9437. TestNativeIO#testRenameTo fails on Windows due to assumption
+    that POSIX errno is embedded in NativeIOException. (Chris Nauroth via
+    suresh)
     
 Release 2.0.5-beta - UNRELEASED
 
diff --git a/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c b/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c
index 47f8dc1c9df..cd9b2a4d8b3 100644
--- a/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c
+++ b/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c
@@ -816,6 +816,7 @@ JNIEXPORT void JNICALL
 Java_org_apache_hadoop_io_nativeio_NativeIO_renameTo0(JNIEnv *env, 
 jclass clazz, jstring jsrc, jstring jdst)
 {
+#ifdef UNIX
   const char *src = NULL, *dst = NULL;
   
   src = (*env)->GetStringUTFChars(env, jsrc, NULL);
@@ -829,6 +830,23 @@ jclass clazz, jstring jsrc, jstring jdst)
 done:
   if (src) (*env)->ReleaseStringUTFChars(env, jsrc, src);
   if (dst) (*env)->ReleaseStringUTFChars(env, jdst, dst);
+#endif
+
+#ifdef WINDOWS
+  LPCWSTR src = NULL, dst = NULL;
+
+  src = (LPCWSTR) (*env)->GetStringChars(env, jsrc, NULL);
+  if (!src) goto done; // exception was thrown
+  dst = (LPCWSTR) (*env)->GetStringChars(env, jdst, NULL);
+  if (!dst) goto done; // exception was thrown
+  if (!MoveFile(src, dst)) {
+    throw_ioe(env, GetLastError());
+  }
+
+done:
+  if (src) (*env)->ReleaseStringChars(env, jsrc, src);
+  if (dst) (*env)->ReleaseStringChars(env, jdst, dst);
+#endif
 }
 
 /**
diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java
index 0602d302720..f5fc49dbde6 100644
--- a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java
+++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java
@@ -446,7 +446,13 @@ public class TestNativeIO {
       NativeIO.renameTo(nonExistentFile, targetFile);
       Assert.fail();
     } catch (NativeIOException e) {
-      Assert.assertEquals(e.getErrno(), Errno.ENOENT);
+      if (Path.WINDOWS) {
+        Assert.assertEquals(
+          String.format("The system cannot find the file specified.%n"),
+          e.getMessage());
+      } else {
+        Assert.assertEquals(Errno.ENOENT, e.getErrno());
+      }
     }
     
     // Test renaming a file to itself.  It should succeed and do nothing.
@@ -465,7 +471,13 @@ public class TestNativeIO {
       NativeIO.renameTo(sourceFile, badTarget);
       Assert.fail();
     } catch (NativeIOException e) {
-      Assert.assertEquals(e.getErrno(), Errno.ENOTDIR);
+      if (Path.WINDOWS) {
+        Assert.assertEquals(
+          String.format("The parameter is incorrect.%n"),
+          e.getMessage());
+      } else {
+        Assert.assertEquals(Errno.ENOTDIR, e.getErrno());
+      }
     }
 
     FileUtils.deleteQuietly(TEST_DIR);