kafka remove zookeeper dependencyjoe's original dartmouth menu

It's not a simple task and requires knowledge, but that's the beauty of it: if you need low-ish latencies, then you can tune the GC to target that instead of throughput. - optimal quorum size is no more than 5, you can setup other node as observer but it’s hard to decide which of 1000 node should be in the quorum ...This way it could become the standard for GO and we can stop wasting effort on multiple raft implementation.For example, there's a great Raft library for Go [1] that any project can use to implement distributed consensus without a separate running program. IME if we ever encountered an issue at work with ZK, we found it impossible to trace it down to a bug that we could fix and upstream. Last i bench(few years back), switching to a crc32 with JNI switch alone was 30 microseconds - an eternity - before doing the work.In any case, we use seastar (seastar.io), which I'm not sure can actually be ported to java. etcd in k8s)There are a lot of shared raft libraries now.

This applies if you understand them.Sometimes having more control over GC is useful tho, could save a re-write.They rewrote to get away from garbage collection full-stop, so I don't think this is quite the argument for the JVM that you're making it out to be.I'm an active Go user and I've been working almost exclusively in Go since 2011.
How is 4 nodes vs 40 not a major improvement? It is you the developer who are responsible for packaging your application correctly.I’ve deployed Java apps for years, the idea that I must “admit” to Java being painful to deploy in order to be taken seriously is laughable.Ok, you have a java app I want on my system, what are the steps I need to do? So 10 divides by 4, that's the 2-3x that I mentioned.How does Scylla relates to Kafka and zookeeper here? The most common trope about it is that it's supposed to be the fastest VM ever because, but Java devs always manage to build slow apps in it. Performance also comes from things like compaction strategy, data modeling, and access pattern, while users and stakeholders also care about things like easiness to modify, friendly license, and steady stewardship.Redpanda uses the Seastar framework which was created by the ScyllaDB project. I encourage you to look at the bug section of the change log for zookeeper, and also the feature list of ZK vs etcd.It might be an effect of popularity, but I rarely hear complaints about reliability out of Etcd, while I hear about ZK issues on a consistent basis.I expect Pulsar to stay with Zookeeper. Especially if it lets you improve your operability story.Counterpoint, if I need to deploy technology T to solve problem P, I don't want to have to also deploy a flotilla of support technologies because modularity or whatever. And if you want a newer version, you have to use some third-party source. (they may change some writers settings, caching, etc)At the end of the day there is no substitute for testing in your own app with your own firewall settings w/ your own hardware. You only have to concern yourself with avoiding use of the Oracle runtime in production without a license. At some point, the architecture needs to change to overcome a fundamental limit. Apache Kafka has upgraded to ZooKeeper 3.5.5 recently: apache/kafka#6802 Kafka has also removed ZkUtils and the zkclient dependency. It's not an intrinsic property of the JVM, but rather the consequence of a series of choices made by whoever wrote the tool in question.I don't understand Java apologists.

Some programs will use your default Java, some will invite you to select the JDK to use, some will bundle their own complete JDK. Those companies need to perform a bid (a whole bunch of logic ) within 100 ms ( including networking), otherwise, they got a financial penalty. I really hope they clean up the library to have a simple API.Isn't this exactly what lead to Hashicorp's memberlist library being used all over in random projects?Sounds good to me, more things like ZooKeeper should be embeddable.The fact that many people are scared away from Kafka simply because they don't want to run zookeeper should be telling.This is the difference between a library and a framework/project.this lib u is great and 1000 time cleaner better tested and easier to use compared to trying to reuse etcd raft implementation :-)The difference is that Kubernetes isn’t a data store - we’d have to implement the full functionality of etcd. So much for understanding it well.Keystores are clunky, but other than that, why exactly?Setting a min and max heap size for a garbage collected language in 2020. Optimize p99.99999 is a whole different subject though.

Sure, but how many JVM-based services have you actually run in production without setting them? We do the same here (remove the ZkUtils clone and the zkclient dependency).

And now with jlink, you can strip it down to make deployment sizes even smaller by only shipping the parts of the JVM that your app uses.It depends upon what you’re looking at in a deployment. These services are used in some form or another by distributed applications.Apache ZooKeeper works on the Client–Server architecture in which clients are machine nodes and servers are nodes.ZooKeeper allows distributed processes to coordinate with each other through a shared hierarchical namespace which is organized similarly to a standard file system. You It is a good faith argument — it’s literally the whole point. Pain in the butt? Good riddance! Is this based on Seastar? If it's more than zero, then I congratulate you on your luck.Kafka and ZK are a pain to deploy. Having had to deal with properly setting zookeeper up on multiple mesos clusters was so painful and recovering from outages via s3 backups so excruciating.. It's whole premise is that it's made to power essential parts of the largest IT operation in the world.And there's nothing for Google to cancel, it's open source and they even made the effort of translating it to Go so it's super easy to work on.And I'm not fanboying over Go, haven't written a Go service in years, but denying Go is an excellent platform to build these kinds of apps on is ridiculous.I keep wanting the same for JVM. Would I change languages I deploy single package jvm files most days having not had to consider the deploy environment for a about 4 years.I really don't think running a go app vs. a java app is ANY different.You’ve made a straw man and are now working very hard to defend it.Are you saying this isn't a major problem with Node?

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