I've been trying to set up kryo serialization, without success. Here's my
first attempt:
akka {
> ...
>
> extensions = [
> "akka.cluster.pubsub.DistributedPubSub",
> "com.romix.akka.serialization.kryo.KryoSerializationExtension$"
> ]
>
> actor {
> ...
>
> kryo {
> type = "graph"
> idstrategy = "automatic"
> buffer-size = 4096
> max-buffer-size = -1
> use-manifests = false
> post-serialization-transformations = "lz4"
> kryo-trace = false
> implicit-registration-logging = true
>
> mappings {
> "life.vw.client.ConciergeTracker$StatusUpdate" = 30,
> "life.vw.client.Connection$Write" = 31
> }
> }
> }
>
> serializers {
> kryo = "com.romix.akka.serialization.kryo.KryoSerializer"
> }
>
> serialization-bindings {
> "life.vw.client.ConciergeTracker$StatusUpdate" = kryo
> "life.vw.client.Connection$Write" = kryo
> }
>
> ...
> }
>
>
When I ran the cluster, I kept seeing serialization warnings:
WARN 17:42:27.913UTC akka.serialization.Serialization(akka://vw) - Using the
default Java serializer for class
[life.vw.client.ConciergeTracker$StatusUpdate] which is not recommended because
of performance implications. Use another serializer or disable this warning
using the setting 'akka.actor.warn-about-java-serializer-usage'
I've tried a few other variations, including different values for
"idstrategy", class names that only use "." (in place of "$"), and
subclassing my messages under a shared trait. None of the attempts worked.
I even tried replacing akka-kryo-serialization with Twitter's chill. Even
though I followed setup instructions in detail, I kept seeing serialization
warnings.
Am I missing something obvious? Is there additional setup required when
using serialization together with DistributedPubSub?
Thanks in advance for your help!
Federico
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