We have improved the way roles and proxies work significantly in 2.4-M2: http://doc.akka.io/docs/akka/2.4-M2/scala/cluster-sharding.html
On Mon, Aug 10, 2015 at 9:41 PM, Yifei <sunyifei1...@gmail.com> wrote: > Thanks Patrik, > > I have the scenario shown below: > > There are 3 shard regions, A, B and C, A send messages to B, B forwards > them to C and C will process them and send back to B > > ShardRegion A -> ShardRegion B <-> ShardRegion C > > A has proxy of B > B has proxy of C > C has proxy of B > > This will work if I set their roles to the same value, for example, in > their configuration files, define > akka.cluster.roles = ["worker"] > akka.contrib.sharding.role = ["worker"] > > However, I wanted to know how this two attributes really mean in Akka > configurations. So I did some experiments. > > A.conf: > akka.cluster.roles = ["A"] > akka.contrib.sharding.role = ["B"] > > B.conf: > akka.cluster.roles = ["B"] > akka.contrib.sharding.role = ["B"] > > C.conf: > akka.cluster.roles = ["C"] > akka.contrib.sharding.role = ["C"] > > > Result: > > 1. B is able to receive messages from A, but from what I saw in logs, A > does not have a Coordinator instance of proxy B started. > > 2. B and C are isolated, C is not able to get messages from B, can I make > them communicate with each other by using different roles? > > 3. There is no oldest coordinators in B and C, all the coordinators > started are in youngest state. > > > Do you know why these results happen and if I can tweak the configuration > file to make it work? > > Thanks... > > > On Friday, August 7, 2015 at 1:38:18 PM UTC-4, Patrik Nordwall wrote: >> >> You can only specify one role in Akka 2.3.x. >> In 2.4-M2 you can use different settings for each entity type. E.g. User >> enities can run on nodes with roleX and ShoppingCart enities can run on >> nodes with roleY. >> fre 7 aug 2015 kl. 17:33 skrev Yifei <sunyif...@gmail.com>: >> >>> Thanks Patrik, >>> >>> Can i define multiple roles in akka.contrib.cluster.sharding.role? >>> >>> If I have a dispatcher shard region, which starts multiple different >>> proxies and dispatches messages to those shardregions via the proxy, how >>> should I define the akka.contrib.cluster.sharding.role? >>> >>> If I understand correctly, it should contain all the roles of the >>> different proxies, but this attribute only allows a single string because I >>> got this error "role has type LIST rather than STRING" >>> >>> >>> On Friday, August 7, 2015 at 2:28:47 AM UTC-4, Patrik Nordwall wrote: >>> >>>> The purpose of the role is to define that the shards are only supposed >>>> to run on a subset of the nodes, the ones tagged with the specified role. >>>> If you start it on a node that does not have this role it will be started >>>> in proxy only mode. >>>> >>>> By the way, we have changed this in 2.4-M2 to make the usage of roles >>>> and proxy only more obvious. >>>> >>> On Thu, Aug 6, 2015 at 5:44 PM, Yifei <sunyif...@gmail.com> wrote: >>>> >>> After I set akka.contrib.cluster.sharding.role to the same role in >>>>> akka.cluster.role, it works. >>>>> >>>>> What does akka.contrib.cluster.sharding.role mean? >>>>> >>>>> >>>>> On Thursday, August 6, 2015 at 11:37:28 AM UTC-4, Yifei wrote: >>>>>> >>>>>> Hi, >>>>>> >>>>>> I have two seeds nodes up in my cluster. When I tried to start a new >>>>>> shard region, there is always no oldest state actors, and I don't know >>>>>> where the coordinator is located >>>>>> >>>>>> The log looks like this: >>>>>> >>>>>> [INFO] [08/06/2015 11:23:31.684] >>>>>> [OMSAkkaCluster-akka.actor.default-dispatcher-20] >>>>>> [akka.tcp://MyCluster@abc:13598/user/sharding/Test1Coordinator] >>>>>> ClusterSingletonManager state change [Start -> Younger] >>>>>> >>>>>> Is there any properties I must set? For example, the roles property >>>>>> >>>>>> Thanks, >>>>>> >>>>>> -- >>>>> >>>>>>>>>> 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+...@googlegroups.com. >>>>> To post to this group, send email to akka...@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 >>>> >>>> -- >>> >>>>>>>>>> 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+...@googlegroups.com. >>> To post to this group, send email to akka...@googlegroups.com. >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> /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 -- >>>>>>>>>> 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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