Do I understand correctly that bolts are instantiated once per worker and never re-prepared?
Thank you, - alexz Sent from my iPhone > On Nov 5, 2014, at 13:37, Itai Frenkel <[email protected]> wrote: > > AFAIK submitTopology submits the JAR to Nimbus which is then loaded to each > worker, so it is run only once, and not on each worker. > > We use a dummy bolt's prepare method for that. Not sure what is the "correct" > way of doing it. > > > Itai > > From: Alex Zuzin <[email protected]> > Sent: Wednesday, November 5, 2014 10:43 AM > To: [email protected] > Subject: Once-per JVM init? > > Hi all! > > Am I correct to assume that "submitTopology" is executed once per JVM and is > a good place to init resources that require once-per-JVM initialization? > If not, is there such a spot (it needs to have access to Storm config)? If > yes, where? :) > > Thank you! > > -- > "If you can't conceal it seamlessly, expose it vigorously"
