Hi,
Following is my app.conf. I am losing almost 50% of the messages. Is it
because of the ClusterRouterPool ?
Running it on 2 node cluster(each is m4.xlarge machine)
There are two actors-
akka {
loglevel = "INFO"
loggers = ["akka.event.slf4j.Slf4jLogger"]
log-dead-letters-during-shutdown = off
log-dead-letters = 0
stdout-loglevel = "INFO"
log-config-on-start = off
daemonic = off
jvm-exit-on-fatal-error = on
actor {
provider = "akka.cluster.ClusterActorRefProvider"
unstarted-push-timeout = 100s
default-mailbox {
mailbox-type = "akka.dispatch.SingleConsumerOnlyUnboundedMailbox"
mailbox-push-timeout-time = 20s
}
default-dispatcher {
type = Dispatcher
executor = "fork-join-executor"
fork-join-executor {
parallelism-min = 16
parallelism-factor = 16
parallelism-max = 64
}
throughput = 1
}
producer-dispatcher {
type = Dispatcher
executor = "fork-join-executor"
fork-join-executor {
parallelism-min = 16
parallelism-factor = 4.0
parallelism-max = 64
}
throughput = 1
}
consumer-dispatcher {
type = Dispatcher
executor = "fork-join-executor"
fork-join-executor {
parallelism-min = 4
parallelism-factor = 4.0
parallelism-max = 4
}
throughput = 1
}
}
remote {
log-remote-lifecycle-events = on
netty.tcp {
hostname = "0.0.0.0"
port = 2551
}
}
extensions = [
"akka.contrib.pattern.DistributedPubSubExtension"
]
cluster {
seed-nodes = [
"akka.tcp://[email protected]:2551",
"akka.tcp://[email protected]:2552"
]
auto-down-unreachable-after = 30s
}
}
akka.contrib.cluster.pub-sub {
name = myappPubSubMediator
role = ""
routing-logic = round-robin
gossip-interval = 1s
removed-time-to-live = 120s
}
spray.httpx {
compact-json-printing = true
}
spray.can {
server {
pipelining-limit = 20
reaping-cycle = infinite
request-chunk-aggregation-limit = 0
stats-support = off
remote-address-header = on
}
client {
max-connections = 64
max-retries = 5
parsing = ${spray.can.parsing}
}
parsing {
max-uri-length = 4k
max-response-reason-length = 64
max-header-name-length = 64
max-header-value-length = 8k
max-header-count = 64
max-content-length = 512m
max-chunk-ext-length = 512
max-chunk-size = 4m
illegal-header-warnings = off
}
}
This is how I am creating cluster Pool for both the actors -
system.actorOf(
ClusterRouterPool(AdaptiveLoadBalancingPool(
SystemLoadAverageMetricsSelector),
ClusterRouterPoolSettings(
totalInstances = instances * 64, maxInstancesPerNode =
instances,
allowLocalRoutees = isLocal, useRole = None)
).props(Props[T]).withDispatcher(dispatcher), name)
}
Instances above is 16.
Following are the versions -
"io.spray" %% "spray-can" %
"1.3.2",
"io.spray" %% "spray-routing" %
"1.3.2",
"io.spray" %% "spray-testkit" %
"1.3.2" % "test",
"io.spray" %% "spray-client" %
"1.3.2",
"io.spray" %% "spray-json" %
"1.2.6",
"com.typesafe.akka" %% "akka-actor" %
"2.3.6",
"com.typesafe.akka" %% "akka-cluster" %
"2.3.6",
"com.typesafe.akka" %% "akka-contrib" %
"2.3.6",
"com.typesafe.akka" %% "akka-slf4j" %
"2.3.6",
"com.typesafe.akka" %% "akka-testkit" %
"2.3.6" % "test"
- Two actors: Producers and Consumers
-- Sending in a following way -
system.actorOf(ClusterClient.props(actorSet,Duration.create(10,
TimeUnit.SECONDS)))
clusterClient ! ClusterClient.Send(String.format("/user/%s", target),
message, localAffinity = localAffinity)
-- Throughput is 500 per second.
-- Messages are being lost randomly. Tough to find any pattern.
-- Can't find anything in the logs
-- I even tried Bounded mailbox along with "
automatic-back-pressure-handling = on" to make it blocking. But still
losing messages.
--
>>>>>>>>>> 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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