- refactor JavaBridge
- to_java, from_java
- every type should have class
- automatic registration
- add Streaming
- worker informations (time, memory, ...)
- killing zombie workers
- add_rb, add_inline_rb to Spark::{Context, RDD}
- fix broadcast for cluster
- dump to disk if there is memory limit
- Add Partitioner to RDD
- add NonExist serializer