-> On Fri, 29 Jan 2016 17:40:24 +0100, Patrik Nordwall
<patrik.nordw...@gmail.com> said:
> Note that the leveldb journal can't really be used with Cluster Sharding,
> because it is a local only journal. Yes, you can play with it with one
> cluster node,
> otherwise you need to a distributed journal, such as
> akka-persistence-cassandra.
I've configured persistency using the cassandra-journal plugin. Here is
the relevant snippet from the configuration:
--8<---------------cut here---------------start------------->8---
persistence {
journal {
max-message-batch-size = 200
max-confirmation-batch-size = 10000
max-deletion-batch-size = 10000
plugin = "cassandra-journal"
}
snapshot-store {
plugin = "cassandra-snapshot-store"
}
}
--8<---------------cut here---------------end--------------->8---
Full configuration is here: https://gist.github.com/4aa8f1e900dbbbdf3f44
> Have you tried the activator template, as a starting point?
Yes, I have and I've tried to model my application after the
akka-cluster-sharding-scala template. They use Akka 2.4.0 and leveldb
for the journal though. Do you think the persistence setting is the
problem? I can try to change to their leveldb settings and see what
happens.
> On Fri, Jan 29, 2016 at 1:36 PM, Martynas Mickevičius
> <martynas.mickevic...@typesafe.com> wrote:
> Hi,
> did you configure any persistence journal plugin and have journal backend
> ready?
> For testing and playing around purposes you can use in-memory journal plugin
> by adding these two configuration lines
> # use the journal plugin provided with akka
> akka.persistence.journal.plugin = akka.persistence.journal.leveldb
> # use the java one
> akka.persistence.journal.leveldb.native = off
> and add the following library
> "org.iq80.leveldb" % "leveldb" % "0.7",
> to your dependencies to add the storage implementation itself.
> On Thu, Jan 28, 2016 at 10:50 PM, Rafał Kowalski <rafal.kowal...@mac.com>
> wrote:
> Hi,
> I'm exploring the wonderful world of Akka cluster and sharding at the
> moment. So far, I've setup just one persistent actor `PublicationActor`
> and I start the cluster sharding as follows:
> --8<---------------cut here---------------start------------->8---
> ClusterSharding(system).start(
> typeName = PublicationActor.shardName,
> entityProps = Props[PublicationActor],
> settings = ClusterShardingSettings(system),
> extractEntityId = PublicationActor.extractEntityId,
> extractShardId = PublicationActor.extractShardId
> )
> --8<---------------cut here---------------end--------------->8---
> For some reason, the ShardCoordinator is never started or determined and
> I see this message in my logs of all nodes:
> --8<---------------cut here---------------start------------->8---
> [WARN] [01/28/2016 21:45:37.280]
> [ClusterSystem-akka.actor.default-dispatcher-19]
> [akka.tcp://ClusterSystem@obelix:2551/system/sharding/pub] Trying to
> register to coordinator at [None], but no acknowledgement. Total [1]
> buffered messages.
> --8<---------------cut here---------------end--------------->8---
> I have two cluster `seed-nodes` set up but I haven't touched any
> cluster.sharding settings yet. What might be the problem here? What am
> I missing?
> Thanks,
> cheers
> --
> -rafał
> --
>>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>>> Check the FAQ:
>>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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> --
> Martynas Mickevičius
> Typesafe – Reactive Apps on the JVM
> --
>>>>>>>>>>> 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
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> --
> Patrik Nordwall
> Typesafe - 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
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cheers
--
-rafał
--
>>>>>>>>>> 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
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