YARN Features

YARN enables you to manage resources and schedule jobs in Hadoop.

YARN provides the following features:

You can use multiple open-source and proprietary data access engines for batch, interactive, and real-time access to the same dataset. Multi-tenant data processing improves an enterprise’s return on its Hadoop investments.
Cluster utilization
You can dynamically allocate cluster resources to improve resource utilization.
Multiple resource types
You can use multiple resource types such as memory, CPU, and GPU.
Significantly improved data center processing power. YARN’s ResourceManager focuses exclusively on scheduling and keeps pace as clusters expand to thousands of nodes managing petabytes of data.
MapReduce applications developed for Hadoop 1 runs on YARN without any disruption to existing processes. YARN maintains API compatability with the previous stable release of Hadoop.