Camel HDFS Component Documentation

I am currently looking to use the camel hdfs component so that I can have
my camel route output to a sequence file. I dug around the documentation
but didn't see a good way (or any useful examples) of how to format my
exchange so that the output would be correclty written to the sequence
file.

I dug through the code and found this line:

Object key = exchange.getIn().getHeader(HdfsHeader.KEY.name());

I need to manually put put this into the header of my exchanges, right?

Thanks!