Apache Slider lets you deploy distributed applications across a Hadoop cluster. Slider leverages the YARN ResourceManager to allocate and distribute components of an application across a cluster.
Key Slider features:
Run applications on YARN without changing the application code (as long as the application follows Slider developer guidelines). There is no need to develop a custom Application Master or other YARN code.
Use the application registry for publishing and discovery of dynamic metadata.
Run multiple instances of applications with different configurations or versions in one Hadoop cluster.
Expand or shrink application component instances while an application is running.
Transparently deploy applications in secure Kerberos clusters.
Aggregate application logs from different containers.
Run applications on a subset of cluster nodes using YARN node labels.
Manage application, component, and container failures.
Slider leverages YARN capabilities to manage:
Application recovery in cases of container failure
Resource allocation (adding and removing containers)
