SeqFilesFromDirectory() error on amazon EMR - mahout

Question

I am trying to run a simple program on Amazon EMR which converts text files in a directory into sequence files. The program runs fine on my local machine but gives me following error on Amazon EMR. Could someone please tell me how to get rid of this error.
Configuration conf=new Configuration();
System.out.println("fs.default.name : - " + conf.get("fs.default.name"));
Path input=new Path(URI.create(args[0]));
Path output=new Path(URI.create(args[1]));
ToolRunner.run(new SequenceFilesFromDirectory(),new String[]{
"--input",input.toString(),
"--output",output.toString(),
"--overwrite",
"--method","mapreduce"});
Thank you.
Exception in thread "main" java.lang.IllegalArgumentException: This file system object (hdfs://172.31.4.175:9000) does not support access to the request path ..
You possibly called FileSystem.get(conf) when you should have called FileSystem.get(uri, conf) to obtain a file system supporting your path.
at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:384)
at org.apache.hadoop.hdfs.DistributedFileSystem.getPathName(DistributedFileSystem.java:129)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:513)
at org.apache.mahout.text.SequenceFilesFromDirectory.runMapReduce(SequenceFilesFromDirectory.java:140)
at org.apache.mahout.text.SequenceFilesFromDirectory.run(SequenceFilesFromDirectory.java:89)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at com.gifts.text.SeqFileDirectory.main(SeqFileDirectory.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:187)*