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  1. Preface
  2. Workflows
  3. Workflow Variables
  4. Workflow Parameters
  5. Cluster Tasks
  6. Command Task
  7. Human Task
  8. Mapping Task
  9. Notification Task
  10. Gateways
  11. Workflow Recovery
  12. Workflow Administration

Developer Workflow Guide

Developer Workflow Guide

Task Instance Group Options

Task Instance Group Options

The following table describes task instance group options that you can set for an EMR cluster:
Property
Description
Task Instance Type
Task node EC2 instance type.
You can specify any available EC2 instance type.
Default is m4.4xlarge.
Task Instance Count
Number of task EC2 instances to create in the cluster.
Default is 2.
Task Instance Maximum Spot Price
Maximum spot price for task nodes. Setting this property changes the purchasing option of the task instance group to Spot instead of On-demand.
Task Auto-Scaling Policy
Optional. Auto-scaling policy for task instances. Type the policy JSON statement here, or provide a path to a file that contains a JSON statement.
Format:
file:\\<path_to_policy_config_file>

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