Many Thanks Patrik for your time! I'll check the addresses and let you know. With this info I could, theoretically, implements a smooth node shutdown.
Best regards! On Mon, Jun 2, 2014 at 3:12 PM, Patrik Nordwall <patrik.nordw...@gmail.com> wrote: > > > > On Mon, Jun 2, 2014 at 1:10 PM, Eduardo Fernandes <edu...@gmail.com> > wrote: > >> Many Thanks Patrik. >> >> I'm afraid that if I manage the actors directly I'll lose all the cluster >> benefits, include spreading out the mapping objectId -> physical node. >> > > That would not change. The ClusterSharding extension is "only" creating > exactly the same actors for you, in a convenient way. I understand that you > think it is overwhelming to create these actors yourself, but it is > possible (and the reason why the props methods are public). > > >> I think that I can reduce the problem to a case where I could avoid the >> creation of new actors in a particular node in the cluster and then, after >> all actors are virtually inactive, turn the node down. >> >> I don't know where is the mapping of entryId -> physical node. >> >> Could I override the distribution logical somehow so I could control in >> which physical node the actor will be instantiated in the cluster? That >> would be perfect. I'd overridden the mapping using the sharding policy with >> AbstractShardAllocationStrategy inheriting >> from LeastShardAllocationStrategy but I couldn't find where adjust the way >> the cluster assign physical nodes to the particular sharding entry. >> > > Yes, that is done by the information returned by the > AbstractShardAllocationStrategy. The passed in currentShardAllocations > contains the ActorRefs of the ShardRegion actors, and you could use the > addresses of these to decide which nodes to use. You must somehow correlate > those addresses with the addresses of the cluster members if you want to > use the cluster role information. > > The AbstractShardAllocationStrategy does not allocate locations for > individual entries. That is always done on a group of entries, a.k.a. > shard. You define the mapping between entry ids (messages) and shards in > the MessageExtractor. > > /Patrik > > >> >> Many thanks, Patrik, for your help. >> >> Regards. >> >> >> >> El lunes, 2 de junio de 2014 10:24:34 UTC+2, Patrik Nordwall escribió: >> >>> Hi Eduardo, >>> >>> The ClusterSharding extension supports configuration of one role to use >>> a subset of nodes, but that is not what you are looking for. Instead of >>> using the ClusterSharding extension you may start the actors yourself and >>> thereby specify the roles. >>> See: >>> ShardCoordinatorSupervisor.props >>> ShardCoordinator.props >>> ShardRegion.props >>> >>> Note that the ShardCoordinatorSupervisor is supposed be started with >>> a ClusterSingletonManager. See here: https://github.com/akka/ >>> akka/blob/v2.3.3/akka-contrib/src/main/scala/akka/contrib/ >>> pattern/ClusterSharding.scala#L360 >>> >>> Cheers, >>> Patrik >>> >>> >>> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to akka-user+unsubscr...@googlegroups.com. >> >> To post to this group, send email to akka-user@googlegroups.com. >> Visit this group at http://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > > Patrik Nordwall > Typesafe <http://typesafe.com/> - Reactive apps on the JVM > Twitter: @patriknw > > <http://typesafe.com/go-reactive-activator-contest> > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to a topic in the > Google Groups "Akka User List" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/akka-user/iP-w0OqBbHg/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > akka-user+unsubscr...@googlegroups.com. > To post to this group, send email to akka-user@googlegroups.com. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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