The way that zookeeper works internally probably makes these two options about equal difficulty. The master has to examine the queue augmented by the versions in the multi-update in either case. The only difference is whether after qualifying the update does it copy multiple one unconditional update or several.
On Wed, Dec 15, 2010 at 7:20 PM, Qian Ye <[email protected]> wrote: > I think the second is easier to implement because it only updates data on > one node, and need not handle rollback in the case of some update failure > after some update success. >
