the heartbeat is the way that jobtracker and tasktracker communicate with each other, tasktracker send heartbeat to jobtracker continuously, and jobtracker returns the task or something else. tasktracker instance call the func heartbeat() in jobtracker.java to send heartbeat.
At 2011-12-01 14:37:39,"mohmmadanis moulavi" <anis_moul...@yahoo.co.in> wrote: > > > > > > > I want to know from where Jobtracker sends task(taskid) to tasktarcker > for scheduling. > i.e where it creates taskid & tasktracker pairs > > > > >Thanks & Regards, > >Mohmmadanis Moulavi > >Student, >MTech (Computer Sci. & Engg.) >Walchand college of Engg. Sangli (M.S.) India