When using rpcSource flume SILENTLY fails when you update the node config via zookeeper

Sometimes, when you update a node's config via zookeeper, that node will going into an infinite error loop (but it doesn't ERROR, or print any error messages).

This seems to happen when that node is running an rpcSource(). It loops: open port, close port

See attached file as a sample of debugging output.

This is another MASSIVE reliability issue when using the rpc source. There is no way to really monitor this.