JobFlowInstancesConfig class

A description of the Amazon EC2 instance on which the cluster (job flow) runs. A valid JobFlowInstancesConfig must contain either InstanceGroups or InstanceFleets. They cannot be used together. You may also have MasterInstanceType, SlaveInstanceType, and InstanceCount (all three must be present), but we don't recommend this configuration.

Constructors

JobFlowInstancesConfig({List<String>? additionalMasterSecurityGroups, List<String>? additionalSlaveSecurityGroups, String? ec2KeyName, String? ec2SubnetId, List<String>? ec2SubnetIds, String? emrManagedMasterSecurityGroup, String? emrManagedSlaveSecurityGroup, String? hadoopVersion, int? instanceCount, List<InstanceFleetConfig>? instanceFleets, List<InstanceGroupConfig>? instanceGroups, bool? keepJobFlowAliveWhenNoSteps, String? masterInstanceType, PlacementType? placement, String? serviceAccessSecurityGroup, String? slaveInstanceType, bool? terminationProtected})

Properties

additionalMasterSecurityGroups → List<String>?
A list of additional Amazon EC2 security group IDs for the master node.
final
additionalSlaveSecurityGroups → List<String>?
A list of additional Amazon EC2 security group IDs for the core and task nodes.
final
ec2KeyName → String?
The name of the EC2 key pair that can be used to connect to the master node using SSH as the user called "hadoop."
final
ec2SubnetId → String?
Applies to clusters that use the uniform instance group configuration. To launch the cluster in Amazon Virtual Private Cloud (Amazon VPC), set this parameter to the identifier of the Amazon VPC subnet where you want the cluster to launch. If you do not specify this value and your account supports EC2-Classic, the cluster launches in EC2-Classic.
final
ec2SubnetIds → List<String>?
Applies to clusters that use the instance fleet configuration. When multiple EC2 subnet IDs are specified, Amazon EMR evaluates them and launches instances in the optimal subnet.
final
emrManagedMasterSecurityGroup → String?
The identifier of the Amazon EC2 security group for the master node.
final
emrManagedSlaveSecurityGroup → String?
The identifier of the Amazon EC2 security group for the core and task nodes.
final
hadoopVersion → String?
Applies only to Amazon EMR release versions earlier than 4.0. The Hadoop version for the cluster. Valid inputs are "0.18" (no longer maintained), "0.20" (no longer maintained), "0.20.205" (no longer maintained), "1.0.3", "2.2.0", or "2.4.0". If you do not set this value, the default of 0.18 is used, unless the AmiVersion parameter is set in the RunJobFlow call, in which case the default version of Hadoop for that AMI version is used.
final
hashCode → int
The hash code for this object.
no setterinherited
instanceCount → int?
The number of EC2 instances in the cluster.
final
instanceFleets → List<InstanceFleetConfig>?
final
instanceGroups → List<InstanceGroupConfig>?
Configuration for the instance groups in a cluster.
final
keepJobFlowAliveWhenNoSteps → bool?
Specifies whether the cluster should remain available after completing all steps.
final
masterInstanceType → String?
The EC2 instance type of the master node.
final
placement → PlacementType?
The Availability Zone in which the cluster runs.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
serviceAccessSecurityGroup → String?
The identifier of the Amazon EC2 security group for the Amazon EMR service to access clusters in VPC private subnets.
final
slaveInstanceType → String?
The EC2 instance type of the core and task nodes.
final
terminationProtected → bool?
Specifies whether to lock the cluster to prevent the Amazon EC2 instances from being terminated by API call, user intervention, or in the event of a job-flow error.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() → Map<String, dynamic>
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited