diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.java
index 15ff3c67c2fb5..d46f0820650e9 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputFormat.java
@@ -156,9 +156,12 @@ public void checkOutputSpecs(JobContext job
       throw new InvalidJobConfException("Output directory not set.");
     }
 
-    // get delegation token for outDir's file system
-    TokenCache.obtainTokensForNamenodes(job.getCredentials(),
-        new Path[] { outDir }, job.getConfiguration());
+    // only get delegation token for non-S3 file system
+    if (!outDir.toString().startsWith("s3")) {
+      // get delegation token for outDir's file system
+      TokenCache.obtainTokensForNamenodes(job.getCredentials(),
+          new Path[] { outDir }, job.getConfiguration());
+    }
 
     if (outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
       throw new FileAlreadyExistsException("Output directory " + outDir +