Federations in MS SQL Azure are a way to achieve greater scalability and performance from the database tier of your application through horizontal partitioning. One or more tables within a database are split by row and portioned across multiple databases (Federation members).
Syncope recently gained official support for Glassfish 3.1.1: since the JPA layer did - again recently - move to Apache OpenJPA, we faced some issues when trying to deploy Syncope - as OpenJPA-powered web application - to Glassfish.
When writing Java code relying on Spring and JPA, you may eventually come to the need of some scheduling; since Quartz is by far the reference in this field, you think you will solve all of your problems by reading the appropriate page on Spring docs. Wrong, at least if you need some Spring goodies like @Autowired and @Transactional.