This fixes (or decreases the chances significately for) a
situation where a stream of incoming connections is closed
and the incoming connection does not have a chance to startup
properly.
I just got burned by #16303.
Answering https://github.com/akka/akka/issues/16303#issuecomment-62957914, it looks like `copyToArray[B >: Byte](Array[B])` can't call `getBytes(Array[Byte], Int, Int)` due to the type constraint (defined by `GenTraversableOnce`).
Instead, I'm going with the simple `isEmpty` solution proposed in the description of #16303 by @kpatrick-kixeye.
* fix NPE in shutdownTransport
* perhaps because shutdown before started
* system.dispatcher is used in other places of the shutdown
* improve logging of compression advertisment progress
* adjust RestartFlow.withBackoff parameters
* quarantine after ActorSystemTerminating signal
(will cleanup compressions)
* Quarantine idle associations
* liveness checks by sending extra HandshakeReq and update the
lastUsed when reply received
* concervative default value to survive network partition, in
case no other messages are sent
* Adjust logging and QuarantinedEvent for harmless quarantine
* Harmless if it was via the shutdown signal or cluster leaving
* The ThreadLocal Serialization.currentTransportInformation is used for serializing local
actor refs, but it's also useful when a serializer library e.g. custom serializer/deserializer
in Jackson need access to the current ActorSystem.
* We set this in a rather ad-hoc way from remoting and in some persistence plugins, but it's only
set for serialization and not deserialization, and it's easy for Persistence plugins or other
libraries to forget this when using Akka serialization directly.
* This change is automatically setting the info when using the ordinary serialize and deserialize
methods.
* It's also set when LocalActorRefProvider, which wasn't always the case previously.
* Keep a cached instance of Serialization.Information in the provider to avoid
creating new instances all the time.
* Added optional Persistence TCK tests to verify that the plugin is setting this
if it's using some custom calls to the serializer.
* add type alias for typed ActorMaterializer
* name it ActorMaterializerFactory in javadsl
Migration guide:
Scala:
import akka.stream.typed.ActorMaterializer -> akka.stream.typed.scaladsl.ActorMaterializer
Java:
import akka.stream.typed.ActorMaterializer -> akka.stream.typed.javadsl.ActorMaterializerFactory
