ETL plugin for openESB for small data migration project is awesome. I don’t know how would it work for small data warehouse issue where you get 4 gb of data daily. Maybe fine. But for other small migration project it does the job just fine and first of all it’s amazingly easy to setup. I think that blind dog of one friend of mine could make a project with this tool. There is just one mistake in the last GlassfishESB version 2.2. This plugin forget to set two variables. You must put them by hand in:
files/nbproject/project.properties (add at the end, mine two entries with path would look like)

o.n.soa.libs.wsdl4j.dir=C:/GlassFishESBv22/netbeans/soa2
xml.validation.dir=C:/GlassFishESBv22/netbeans/xml2

After that the project is ready to be build and generates wsdl file required for another operations: like including in business process or putting just inside composite application.