close proximity to on-premises data and applications. For more information about AWS Outposts, seeAWS Outposts User Guide.PrerequisitesThe following are the prerequisites for using Amazon EMR on AWS Outposts:•You must have installed and configured AWS Outposts in your on-premises data center.•You must have a reliable network connection between your Outpost environment and an AWS Region.•You must have suﬃcient capacity for EMR supported instance types available in your Outpost.LimitationsThe following are the limitations of using Amazon EMR on AWS Outposts:•On-Demand Instances are the only supported option for Amazon EC2 instances. Spot Instances are notavailable for Amazon EMR on AWS Outposts.61
Amazon EMR Management GuideNetwork Connectivity Considerations•If you need additional Amazon EBS storage volumes, only General Purpose SSD (GP2) is supported.•Only the following instance types are supported by Amazon EMR on AWS Outposts:Instance ClassInstance TypesGeneral purposem5.xlarge | m5.2xlarge | m5.4xlarge | m5.12xlarge | m5.24xlarge| m5d.xlarge | m5d.2xlarge | m5d.4xlarge | m5d.12xlarge |m5d.24xlargeCompute-optimizedc5.xlarge | c5.2xlarge | c5.4xlarge | c5.9xlarge | c5.18xlarge |c5d.xlarge | c5d.2xlarge | c5d.4xlarge| c5d.9xlarge | c5d.18xlargeMemory-optimizedr5.xlarge | r5.2xlarge | r5.4xlarge | r5.12xlarge | r5d.xlarge |r5d.2xlarge | r5d.4xlarge | r5d.12xlarge | r5d.24xlargeStorage-optimizedi3en.xlarge | i3en.2xlarge | i3en.3xlarge | i3en.6xlarge |i3en.12xlarge | i3en.24xlargeNetwork Connectivity Considerations•If network connectivity between your Outpost and its AWS Region is lost, your clusters will continue torun. However, you cannot create new clusters or take new actions on existing clusters until connectivityis restored. In case of instance failures, the instance will not be automatically replaced. Additionally,actions such as adding steps to a running cluster, checking step execution status, and sendingCloudWatch metrics and events will be delayed.•We recommend that you provide reliable and highly available network connectivity between yourOutpost and the AWS Region. If network connectivity between your Outpost and its AWS Region is lostfor more than a few hours, clusters that have enabled terminate protection will continue to run, andclusters that have disabled terminate protection may be terminated.•If network connectivity will be impacted due to routine maintenance, we recommend proactivelyenabling terminate protection. More generally, connectivity interruption means that any externaldependencies that are not local to the Outpost or customer network will not be accessible. Thisincludes Amazon S3, DynamoDB used with EMRFS consistency view, and Amazon RDS if an in-regioninstance is used for an EMR cluster with multiple master nodes.Creating an Amazon EMR Cluster on AWS OutpostsCreating an Amazon EMR cluster on AWS Outposts is similar to creating an Amazon EMR cluster in theAWS Cloud. When you create an Amazon EMR cluster on AWS Outposts, you must specify an AmazonEC2 subnet associated with your Outpost.
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