Are the API changes in mapred->mapreduce in 0.20.0 usable?

[Brian Ferris]

I was upgraded to 0.20.0 last week and I noticed most everything in  
"org.apache.hadoop.mapred.*" has been deprecated.  However, I've not  
been having any luck getting the new Map-Reduce classes to work.   
Hadoop Streaming still seems to expect the old API and it doesn't seem  
that JobClient has been rewritten to use the new APIs either.  Is  
there an example of using the new APIs someplace?  Should I be using  
them at all?

Thanks,
Brian