Posted On: Sep 6, 2019

EMR 6.0.0 (Beta) allows users to define application and library dependencies using Docker images from Docker Hub and Amazon Elastic Container Registry (ECR) using Spark 2.4.3 and Hadoop 3.1.0.

Today, PySpark and SparkR users must install their dependencies on each host in a cluster. As a result, teams operating multi-tenant clusters struggle to keep up with specific library versions and manage dependencies, limiting developer productivity, increasing the time spent preparing a cluster for use, and adding complexity to cluster upgrades. 

Using Hadoop 3, Docker, and EMR, Spark users no longer have to install library dependencies on individual cluster hosts, and application dependencies can now be scoped to individual Spark applications. This is achieved by running Spark applications in Docker containers instead of directly on EMR cluster hosts. To use Docker with your Spark application, simply reference the name of the Docker image when submitting jobs to an EMR cluster. YARN, running on an EMR cluster, will automatically retrieve the image from Docker Hub or ECR, and run your application. You can use Docker images to package your own library dependencies, and can even run containers with different versions of R and Python on the same cluster. 

Also included in the EMR release 6.0.0 (Beta) is support for Amazon Linux 2, and Amazon Corretto JDK 8. Amazon Linux 2 is the latest generation of the Amazon Linux server operating system, providing new system tools like the systemd init system, and the performance tuned Amazon Linux LTS Kernel. Amazon Corretto JDK 8 provides a Java SE certified compatible JDK that includes long-term support, performance enhancements, and security fixes. 

This EMR release 6.0.0 (Beta) is available in the US East (N. Virginia), and US West (Oregon) regions. To get started, see Run Spark applications with Docker using Amazon EMR 6.0.0 (Beta). To provide feedback or ask questions about this release, please use our Amazon EMR forum.

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