[ aws . emr ]



Modifies the target On-Demand and target Spot capacities for the instance fleet with the specified InstanceFleetID within the cluster specified using ClusterID. The call either succeeds or fails atomically.


The instance fleet configuration is available only in Amazon EMR versions 4.8.0 and later, excluding 5.0.x versions.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.


--cluster-id <value>
--instance-fleet <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]


--cluster-id (string)

The unique identifier of the cluster.

--instance-fleet (structure)

The unique identifier of the instance fleet.

InstanceFleetId -> (string)

A unique identifier for the instance fleet.

TargetOnDemandCapacity -> (integer)

The target capacity of On-Demand units for the instance fleet. For more information see InstanceFleetConfig$TargetOnDemandCapacity .

TargetSpotCapacity -> (integer)

The target capacity of Spot units for the instance fleet. For more information, see InstanceFleetConfig$TargetSpotCapacity .

Shorthand Syntax:


JSON Syntax:

  "InstanceFleetId": "string",
  "TargetOnDemandCapacity": integer,
  "TargetSpotCapacity": integer

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.


To change the target capacites of an instance fleet

This example changes the On-Demand and Spot target capacities to 1 for the instance fleet specified.


aws emr modify-instance-fleet --cluster-id 'j-12ABCDEFGHI34JK' --instance-fleet InstanceFleetId='if-2ABC4DEFGHIJ4',TargetOnDemandCapacity=1,TargetSpotCapacity=1