resource "aws_emr_cluster" "example" {

  ec2_attributes {
    subnet_id = aws_subnet.example.id
  }

  master_instance_group {
    instance_count = 3
  }
  release_label = "emr-5.24.1"
  termination_protection = true
}

resource "aws_subnet" "example" {
  map_public_ip_on_launch = true
}