Flume NG needs an Avro RPC source. This can be ported from Flume OG.
Committed to branch flume-728. May require additional features, but what's there should work for initial alpha testing.
Integrated in flume-728 #28 (See https://builds.apache.org/job/flume-728/28/)
FLUME-771: Implement NG Avro source
esammer : http://svn.apache.org/viewvc/?view=rev&rev=1179893