Apache Karaf 2.1.x branch is in end of life, 2.1.6 available

We (The Apache Karaf team) have decided to switch Karaf 2.1.x branch into End Of Life mode.

We released Karaf 2.1.6 which is the last version on this branch:

http://karaf.apache.org/index/community/download/karaf-2.1.6-release.html

We encourage all users to upgrade to Karaf 2.2.2, which is the latest Karaf stable release.

This announce is in preparation of the next Karaf 3.0.0 on which we are hardly working currently.

Comments

Post a Comment

Popular posts from this blog

What's new in Apache Karaf Cellar 4.0.0 ?

Apache Karaf Cellar 4.0.0 release is now on vote, and hopefully, it should be available very soon. This release is a major new release. More than just bug fixes, this release brings several refactoring and new features. It’s time to take a tour in the new Cellar 4.0.0. HTTP features Cellar 4.0.0 brings new HTTP features. HTTP load balancer Cellar 4.0.0 provides a new feature: cellar-http-balancer. The purpose is to use any nodes in a cluster group to access a web application, even if the web application is not actually deployed on the local node. For instance, you have a cluster group containing four nodes. You deploy a web application on two nodes. So basically, to access your web application, you have to: specify the address of one of two nodes where the web application is deployed in your browser use a load balancer (mod_proxy_balancer, Cisco, Juniper, F5, whatever) to load balance on the two nodes. The drawback of this is that the load balancer is a single point of failure, an...
Read more

Exposing Apache Karaf configurations with Apache Arrow Flight

Image
This blog post shows how to use Apache Arrow and Arrow Flight in Apache Karaf runtime. The code base is available here: https://github.com/jbonofre/karaf-arrow . Apache Arrow ? Apache Arrow is composed by: The Arrow format (specification). Format implementations with different languages (C, Java, Go, Rust, ...). Extra subprojects like Flight, Flight SQL, ADBC, nanoarrow, ... Apache Arrow format is a in-memory columnar format, super efficient for scanning and iterating a large chunks of data. In traditional memory buffer, we focus on "row". Apache Arrow format "groups" data per column, which is much more efficient on modern CPUs/GPUs. The Apache Arrow format is basically a specification. We have several implementations for this specification: C C++ C# Go Java Python Ruby Rust As the purpose of this blog post is to show Apache Arrow in Apache Karaf, we will use Arrow Java. In addition, Apache Arrow also provides several...
Read more

Apache Karaf Minho and OpenTelemetry

Image
Telemetry is an important part of a software stack, especially on distributed system (where services call each others). OpenTelemetry is a CNCF project coming from OpenTracing and OpenCensus. It provides API to easily instrument your code and tools to collect and export telemetry data (metrics, logs and traces). Before going into how to use OpenTelemetry with Minho, we have to understand some key concepts: Span is a single building block representing an operation or some unit of work that you want to capture. They are capable of standing on their own, referencing (or following) from other spans, storing metadata, tags, etc. Trace is a visualisation of the life of a request (or series of other operations) that is made up of one or more spans. This collection of spans work together to paint a picture of the overall request, allowing you to easily reconstruct what happened within each span, etc. SpanContext is a wrapper of key values pairs that associates a trace to one or mor...
Read more