Thank for contact me and thank’s for your help and time > On Feb 26, 2017, at 1:48 PM, Márcio Faria <[email protected]> wrote: > > Hi, > > I need to generate unique numbers globally across NiFi nodes in an atomic, > persistent way. Ideally, something like a sequence > <http://www.orafaq.com/wiki/Sequence>but with no actual database involved. > > Maybe I'm missing something here, but I don't think a Distributed Map Cache, > like described in Use of Sequence in Nifi without using a custom processor > <https://community.hortonworks.com/questions/82933/use-of-sequence-in-nifi-without-using-a-custom-pro.html>, > is a solution. How would that prevent concurrent access issues? > > Counters > <https://community.hortonworks.com/questions/50622/apache-nifi-what-are-counters-in-nifi.html> > don't help either because they only keep values in memory, right? > > Do I need to create my own specialized Controller Service? > > Thank you, > > Marcio > > > > > >
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