Hello everyone, Now, decommission command need bookie stoped, and only
support one bookie at same time. I plan to make decommission behave more like
HDFS decommission commands: 1??support decommission two or more servers at
same time. 2??decommission will make servers become read-only. (more robust:
only support replication read.) 3??I also have implemented replication
throttle, so replication will not include too much load on clusters. see
3??when decommission finished, the server is ready to stop.
