Getty very large amount of missed events for currentEventsByTag query
Hi , I encountered a very odd issue when using cassandra persistence query, currentEventsByTag. Relevant log: java.lang.RuntimeException: 97124 missing tagged events for tag [TAG]. Failing without...
View ArticleActor Timer for long running applications?
I apologize if this question or something similar was asked here before. I tried to quickly scan the discussions here, before posting my question. My question here is related to the Actor Timers. So,...
View ArticleAkka streams graph stage stuck if onPull doesn't push
Hi all, I’m developing a custom Akka source using GraphStage in Java. I’m noticing that if during onPull(), no element is pushed, the stage is stuck. Is my understanding incorrect that onPull() should...
View ArticleIs the Typed StashBuffer capacity pre-allocated?
In Akka Typed, the StashBuffer has a maximum capacity. What is the reason for this? Will increasing the capacity decrease performance, independent of the number of elements actually in the buffer? In...
View ArticleAkka-persistence-cassandra: Getting "Unable to find missing tagged event"...
Hi, we are observing some issues with akka-persistence-cassandra. When we have a lot of events and replay them, we hit this line (missing.deadline.isOverdue()) and get an IllegalStateException on this...
View ArticleAkka HTTP 10.1.13 Released
Dear hakkers, We are happy to announce the 10.1.13 release of Akka HTTP. This release is the 13th update in the 10.1.x series of Akka HTTP. This is a small maintenance release which fixes a bug in the...
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Lagom configuration to enable netty hostname verification
how to configure lagom to set netty enable hostname verification github.com/netty/netty [Netty 5] Enable hostname verification by default opened 02:09PM - 13 Nov 18 UTC normanmaurer Not having...
View ArticleTesting Akka HTTP in an actor with ScalaTestWithActorTestKit
I have a simple actor functioning as a proxy to a model serving service. object ModelService { sealed trait Command extends NoSerializationVerificationNeeded sealed trait Request[R <: Reply]...
View ArticleHow to override supervisory strategy of classic actor from typed one?
According to akka documentation it is possible to “spawn and supervise typed child from classic parent, and opposite”. But how can I override the standard supervisory strategy “restart” of a classic...
View ArticleHow do I configure a Priority Mailbox (Akka Typed)?
How do I configure the message priorities of a Priority Mailbox (eg UnboundedStablePriorityMailbox) in Akka Typed? Is that done through the configuration file, or at “runtime” through instantiating /...
View ArticleBest way of creating a JSON RequestEntity for the client http call
I’d like to make a client http call providing JSON RequestEntity with some serialized java object I assume that doing this serialization explicitly in a blocking way is not the best option, is it?...
View ArticleVector Clock for Akka Actor
Hi, Is there a data structure for Akka Actor the same as the vector clock for Akka Cluster? 1 post - 1 participant Read full topic
View ArticleBug or by design behavior ? Stoping a stream via KillSwitch + map combination
Given akka doc I would expect the stream to stop after 7th/8th element. Why is it not stopping ? It continues all the way to the last element (20th). What I want to achive is that on system terminate,...
View ArticleExclude self node form Distributed PubSub in cluster
Hi Guys! Is it possible to exclude self node from message distribution in PubSub in cluster? Thanks in advance 4 posts - 2 participants Read full topic
View ArticleWork pulling: unexpected RequestNext messages
I’m using the work pulling mechanism to implement a dynamic, distributed pool of workers. I’ve read the documentation and the relevant sample code, but while testing some failure modes I’ve...
View ArticleArtery serialization exception for object that isn't part of an actor message
Using akka 2.6.10 classic I’m getting java.io.NotSerializableException that originates from akka.remote.MessageSerializer$.serializeForArtery I understand how to make this class serializable, but… by...
View ArticleAlpakka Kafka and Manual Offset Management
Hi everybody, I try to understand the Manual Offset Management of the Alpakka Kafka but I have some problems to understand the concepts… When I read the existing API, I have a feeiling Manual Offset...
View ArticleUnexpected behavior when connecting JMS consumer source to JMS producer sink
Hi, I’m new to Alpakka (and JMS). I’m attaching a minimal example where I publish messages to topic1 using a tick source (1 message per second) and a JmsProducer sink. I then subscribe to topic1 using...
View ArticlePreserving the state of cluster singleton
Is there a way to transfer the state from an old singleton instance to a new one when the oldest node in the cluster changes? 1 post - 1 participant Read full topic
View ArticleAkka HTTP 10.2.2 released
Dear hakkers, We are happy to announce the 10.2.2 release of Akka HTTP. This release is the second update in the 10.2.x series of Akka HTTP. Changes since 10.2.1 For a full overview you can also see...
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