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Turn on direct replication by default (#29493)

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This commit is contained in:
Christopher Batey 2020-08-14 12:26:54 +01:00
parent 849018b81e
commit 260276fd90
4 changed files with 5 additions and 5 deletions
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2
akka-cluster-sharding-typed/src/main/scala/akka/cluster/sharding/typed/ReplicatedEntityProvider.scala
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@ -53,7 +53,7 @@ object ReplicatedEntityProvider {
val typeKey = EntityTypeKey[M](s"$typeName${Separator}${replicaId.id}") val typeKey = EntityTypeKey[M](s"$typeName${Separator}${replicaId.id}")
(settingsPerReplicaFactory(typeKey, replicaId), typeName) (settingsPerReplicaFactory(typeKey, replicaId), typeName)
}.toVector, directReplication = false) }.toVector, directReplication = true)
} }
} }

2
akka-docs/src/main/paradox/typed/replicated-eventsourcing.md
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@ -314,7 +314,7 @@ Scala
Java Java
: @@snip [ReplicatedShardingTest.java](/akka-cluster-sharding-typed/src/test/java/jdocs/akka/cluster/sharding/typed/ReplicatedShardingCompileOnlySpec.java) { #bootstrap } : @@snip [ReplicatedShardingTest.java](/akka-cluster-sharding-typed/src/test/java/jdocs/akka/cluster/sharding/typed/ReplicatedShardingCompileOnlySpec.java) { #bootstrap }
This will run a single instance of sharding and the replicas will be differentiated by having the replica id in the sharding entity id. This will run an instance of sharding and per replica and each entity id contains the replica id and the type name.
Replicas could be on the same node if they end up in the same shard or if the shards get allocated to the same node. Replicas could be on the same node if they end up in the same shard or if the shards get allocated to the same node.
To prevent this roles can be used. You could for instance add a cluster role per availability zone / rack and have a replica per rack. To prevent this roles can be used. You could for instance add a cluster role per availability zone / rack and have a replica per rack.

2
akka-persistence-typed/src/main/scala/akka/persistence/typed/internal/EventSourcedBehaviorImpl.scala
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@ -98,7 +98,7 @@ private[akka] final case class EventSourcedBehaviorImpl[Command, Event, State](
supervisionStrategy: SupervisorStrategy = SupervisorStrategy.stop, supervisionStrategy: SupervisorStrategy = SupervisorStrategy.stop,
override val signalHandler: PartialFunction[(State, Signal), Unit] = PartialFunction.empty, override val signalHandler: PartialFunction[(State, Signal), Unit] = PartialFunction.empty,
replication: Option[ReplicationSetup] = None, replication: Option[ReplicationSetup] = None,
publishEvents: Boolean = false) publishEvents: Boolean = true)
extends EventSourcedBehavior[Command, Event, State] { extends EventSourcedBehavior[Command, Event, State] {
import EventSourcedBehaviorImpl.WriterIdentity import EventSourcedBehaviorImpl.WriterIdentity

4
akka-persistence-typed/src/main/scala/akka/persistence/typed/javadsl/ReplicatedEventSourcedBehavior.scala
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@ -25,10 +25,10 @@ abstract class ReplicatedEventSourcedBehavior[Command, Event, State](
def this(replicationContext: ReplicationContext) = this(replicationContext, Optional.empty()) def this(replicationContext: ReplicationContext) = this(replicationContext, Optional.empty())
/** /**
* Override and return true to publish events to the system event stream as * Override and return false to disable events being published to the system event stream as
* [[akka.persistence.typed.PublishedEvent]] after they have been persisted. * [[akka.persistence.typed.PublishedEvent]] after they have been persisted.
*/ */
def withEventPublishing: Boolean = false def withEventPublishing: Boolean = true
protected def getReplicationContext(): ReplicationContext = replicationContext protected def getReplicationContext(): ReplicationContext = replicationContext