Pre-initialized capacity defaults - Amazon EMR

Amazon EMR Serverless is in preview release and is subject to change. To use EMR Serverless in preview, follow the sign up steps at The only Region that EMR Serverless currently supports is us-east-1, so make sure to set all region parameters to this value. All Amazon S3 buckets used with EMR Serverless must also be created in us-east-1.

Pre-initialized capacity defaults

EMR Serverless configures all applications with the default to run one job at low latency. The defaults are engine-specific and are set as follows:

  • Spark - 3 drivers (4 vCPU, 16 GB memory, 21 GB disk), 9 executors (4 vCPU, 16 GB memory, 21 GB disk)

  • Hive - 3 drivers (2 vCPU, 6 GB memory, and 21 GB disk), 30 Tez tasks (1 vCPU, 6 GB memory, and 21 GB disk)