I believe that you are seeing this from a weird perspective. Personal opinion's aside, maybe reading pregel's paper could be of great benefit, because Giraph is based on it.
Regarding to your questions: Workers stop when all* vertex* are halt, and every worker has a partition of vertex. Applicacion Manager (master) halt when all workers are done. A worker will wake up, if one of its vertex is active again, for example, because it's receiving a message. 2015-12-22 4:30 GMT-03:00 Kaushik Baruah <[email protected]>: > Hi Experts, > > Can you please let me know, if master compute halts automatically when all > the workers halt. > > 1) If it is so, how can we know from master compute if all workers have > halted or is there a way to keep the master compute running even though all > the workers have halted. > > 2) Is there a way to wake up the workers from master compute if they have > halted. > > Best, > Kaushik >
