I initially complained about the complexity of installing Mesos when I was playing around with Spark and Shark. However, when I saw the Twitter Mesos and Framework presentation, I understood why Mesos can be disruptive to how you architect applications in a highly distributed manner typical for Cloud Computing.
You can see the presentation here.
The key is that Twitter combined Mesos with Zookeeper, Linux Control Groups and Google’s Protocol Buffers as well as Spark, Storm and Hadoop. This provides them with a way to easily program services that can be scaled to hundreds of mesos nodes, automatically upgraded, and restarted in case of failure. Also resource usage can be controlled via the control groups. Zookeeper manages the configuration. Protocol buffers assure efficient communication between nodes. Services can use Spark and Storm for real-time operations and Hadoop for batch. Developers do not have to worry about scaling the services, deploying them to different nodes, etc. This is handled by the Twitter Framework and Mesos master.
There is only one thing to add: “TWITTER PLEASE OPEN SOURCE YOUR TWITTER FRAMEWORK” or in Twitter language: “#mesos please #opensource #twitterfw now @telruptive “…