When on HDFS, how do I detect schema of input paths?

[David B. Martin]

I've been getting my feet wet writing pseduo-distributed code.  In
that environment:

_____

        File file = new File(input);
        DatumReader<GenericRecord> reader = new
GenericDatumReader<GenericRecord>();
        DataFileReader<GenericRecord> dataFileReader = new
DataFileReader<GenericRecord>(file, reader);

        Schema s = dataFileReader.getSchema();
_____

Saying something like this works just fine.  Now I have the schema of
my input and am ready for real action.

But on the HDFS, I have to work in terms of Path instances instead of
File instances.  Right?  I can't figure out how to perform the above
operation when my inputs are of type  org.apache.hadoop.fs.Path and
not java.io.File.

Dave