+ enable parallel execution
+ exclude perf tests (TODO mark more as such)
+ uses sbt-dependency-graph plugin
+ implement dependency tracking for testing of only these
+ project which could have been affected by a given PR
This is an API breaking change if someone implemented their own Routers.
The change is required because the router must know if the local routees
should be started or not so it has to check the roles of the cluster
member (the local one). We could delay this decision of starting local
routees, but that would allow messages to be dead-letter-ed (bad).
* It did not use the toString (including full address of destination) of the
node entries, instead it used the hashCode which always included the self
address
* This was a regression in 2.3, it is correct in 2.2.3
* because it is not referentially transparent; normally we reserved parens for
side-effecting code but given how people thoughtlessly close over it we revised
that that decision for sender
* caller can still omit parens
* Separate routing logic, to be usable stand alone, e.g. in actors
* Simplify RouterConfig, only a factory
* Move reading of config from Deployer to the RouterConfig
* Distiction between Pool and Group router types
* Remove usage of actorFor, use ActorSelection
* Management messages to add and remove routees
* Simplify the internals of RoutedActorCell & co
* Move resize specific code to separate RoutedActorCell subclass
* Change resizer api to only return capacity change
* Resizer only allowed together with Pool
* Re-implement all routers, and keep old api during deprecation phase
* Replace ClusterRouterConfig, deprecation
* Rewrite documentation
* Migration guide
* Also includes related ticket:
+act #3087 Create nicer Props factories for RouterConfig
* Replace unreachable Set with Reachability table
* Unreachable members stay in member Set
* Downing a live member was moved it to the unreachable Set,
and then removed from there by the leader. That will not
work when flipping back to reachable, so a Down member must
be detected as unreachable before beeing removed. Similar
to Exiting. Member shuts down itself if it sees itself as
Down.
* Flip back to reachable when failure detector monitors it as
available again
* ReachableMember event
* Can't ignore gossip from aggregated unreachable (see SurviveNetworkInstabilitySpec)
* Make use of ReachableMember event in cluster router
* End heartbeat when acknowledged, EndHeartbeatAck
* Remove nr-of-end-heartbeats from conf
* Full reachability info in JMX cluster status
* Don't use interval after unreachable for AccrualFailureDetector history
* Add QuarantinedEvent to remoting, used for Reachability.Terminated
* Prune reachability table when all reachable
* Update documentation
* Performance testing and optimizations
* Config of node roles cluster.role
* Cluster router configurable with use-role
* RoleLeaderChanged event
* Cluster singleton per role
* Cluster only starts once all required per-role node
counts are reached,
role.<role-name>.min-nr-of-members config
* Update documentation and make use of the roles in the examples
* case object and case class for MixMetricsSelector
* Rename decay-half-life-duration to moving-average-half-life
* Clarification of decay-half-life-duration and collect-interval
* Removed Fields, Java compatibility issue
* Adapt for-yield variables
* Comment metrics collector constructor that takes system param
* Don't copy EWMA if not needed
* LogOf2 constant 0.69315
* Don't use mapValues
* Remove RichInt conversion
* sigar version replace tag in docs
* createDeployer factory method to make it possible to override
deployer in subclass
* Improve readability of MetricsListener (in sample)
* Better startup of factorial sample (no sleep)
* Many minor enhancements and cleanups
* Refactoring of standard metrics extractors and data structures
* Removed optional value in Metric, simplified a lot
* Configuration of EWMA by using half-life duration
* Renamed DataStream to EWMA
* Incorporate review feedback
* Use binarySearch for selecting weighted routees
* More metrics selectors for the router
* Removed network metrics, since not supported on linux
* Configuration of router
* Rename to AdaptiveLoadBalancingRouter
* Remove total cores metrics, since it's the same as jmx getAvailableProcessors,
tested on intel 24 core server and amd 48 core server, and MBP
* API cleanup
* Java API additions
* Documentation of metrics and AdaptiveLoadBalancingRouter
* New cluster sample to illustrate metrics in the documentation,
and play around with (factorial)
* MetricsSelector, calculate capacity, weights and allocate weighted
routee refs
* ClusterLoadBalancingRouterSpec
* Optional heap max
* Constants for the metric fields
* Refactoring of Metric and decay
* Rewrite of DataStreamSpec
* Correction of EWMA and removal of BigInt, BigDecimal
* Separation of MetricsCollector into trait and two classes,
SigarMetricsCollector and JmxMetricsCollector
* This will reduce cost when sigar is not installed, such as
avoiding throwing and catching exc for every call
* Improved error handling for loading sigar
* Made MetricsCollector implementation configurable
* Tested with sigar
* Found and fixed issue with NoRouter which is used in the
combination of FromConfig and cluster.enabled=true
* Multi-node test that tests several of the possible
cominations
* This also removes the need for the withClusterRouter sugar
* Improved the apply and constructors for ClusterRouterSettings, since
that will be user api instead
* Removed need for extra actor that subscribes to cluster
events
* ClusterRouterActor is the router actor and aslo subscribes
* Less scary initialization, and safe calls to createRoutees
* Intercept ClusterDomainEvent to route them to ClusterRouterActor
instead of to the routees
* Ordinary withRouther withDeploy is TOO ugly for this
* Implicit conversion adds withClusterRouter to Props
for Scala API
* Helper method in ClusterRouterPropsDecorator for Java API
* Config max-nr-of-instances-per-node
* selectDeploymentTarget that takes max-nr-of-instances-per-node
and nr-of-instances into account
* Deploy when new member added or removed
* Moved routeeProps to RouteeProvider constructor, needed for
this feature, but also simplifies createRoute, createRoutee,
and resize, since routeeProps doesn't have to be passed around.
* We will write more tests that rely on real Cluster(system) extension,
such as ClusterRoundRobinRoutedActorSpec
* When not using FailureDetectorStrategy or overriding seed nodes
MultiNodeClusterSpec will use the real Cluster(system) extension
instead of a new Cluster instance with additional test facilities
