Reading a simple Avro file from HDFS

I am trying to do a simple read of an Avro file stored in HDFS. I found out how to read it when it is on the local file system....

FileReader reader = DataFileReader.openReader(new File(filename), new GenericDatumReader());

for (GenericRecord datum : fileReader) {
   String value = datum.get(1).toString();
   System.out.println("value = " value);
}

reader.close();

My file is in HDFS, however. I cannot give the openReader a Path or an FSDataInputStream. How can I simply read an Avro file in HDFS?

EDIT: I got this to work by creating a custom class (SeekableHadoopInput) that implements SeekableInput. I "stole" this from "Ganglion" on github. Still, seems like there would be a Hadoop/Avro integration path for this.

Thanks