Amazonka.EMR.Types.AutoScalingPolicyDescription

Documentation

data AutoScalingPolicyDescription

An automatic scaling policy for a core instance group or task instance group in an Amazon EMR cluster. The automatic scaling policy defines how an instance group dynamically adds and terminates EC2 instances in response to the value of a CloudWatch metric. See PutAutoScalingPolicy.

See: newAutoScalingPolicyDescription smart constructor.

Constructors

AutoScalingPolicyDescription'

Fields

• constraints :: Maybe ScalingConstraints

  The upper and lower EC2 instance limits for an automatic scaling policy. Automatic scaling activity will not cause an instance group to grow above or below these limits.

• rules :: Maybe [ScalingRule]

  The scale-in and scale-out rules that comprise the automatic scaling policy.

• status :: Maybe AutoScalingPolicyStatus

  The status of an automatic scaling policy.

Instances

FromJSON AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

parseJSON :: Value -> Parser AutoScalingPolicyDescription

parseJSONList :: Value -> Parser [AutoScalingPolicyDescription]

Generic AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Associated Types

type Rep AutoScalingPolicyDescription :: Type -> Type

Methods

from :: AutoScalingPolicyDescription -> Rep AutoScalingPolicyDescription x

to :: Rep AutoScalingPolicyDescription x -> AutoScalingPolicyDescription

Read AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

readsPrec :: Int -> ReadS AutoScalingPolicyDescription

readList :: ReadS [AutoScalingPolicyDescription]

readPrec :: ReadPrec AutoScalingPolicyDescription

readListPrec :: ReadPrec [AutoScalingPolicyDescription]

Show AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

showsPrec :: Int -> AutoScalingPolicyDescription -> ShowS

show :: AutoScalingPolicyDescription -> String

showList :: [AutoScalingPolicyDescription] -> ShowS

NFData AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

rnf :: AutoScalingPolicyDescription -> ()

Eq AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

(==) :: AutoScalingPolicyDescription -> AutoScalingPolicyDescription -> Bool

(/=) :: AutoScalingPolicyDescription -> AutoScalingPolicyDescription -> Bool

Hashable AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

Methods

hashWithSalt :: Int -> AutoScalingPolicyDescription -> Int

hash :: AutoScalingPolicyDescription -> Int

type Rep AutoScalingPolicyDescription

Defined in Amazonka.EMR.Types.AutoScalingPolicyDescription

type Rep AutoScalingPolicyDescription = D1 ('MetaData "AutoScalingPolicyDescription" "Amazonka.EMR.Types.AutoScalingPolicyDescription" "amazonka-emr-2.0-B3cWhP6sdymF3IBUMdPGcd" 'False) (C1 ('MetaCons "AutoScalingPolicyDescription'" 'PrefixI 'True) (S1 ('MetaSel ('Just "constraints") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe ScalingConstraints)) :*: (S1 ('MetaSel ('Just "rules") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [ScalingRule])) :*: S1 ('MetaSel ('Just "status") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe AutoScalingPolicyStatus)))))

newAutoScalingPolicyDescription :: AutoScalingPolicyDescription

Create a value of AutoScalingPolicyDescription with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:constraints:AutoScalingPolicyDescription', autoScalingPolicyDescription_constraints - The upper and lower EC2 instance limits for an automatic scaling policy. Automatic scaling activity will not cause an instance group to grow above or below these limits.

$sel:rules:AutoScalingPolicyDescription', autoScalingPolicyDescription_rules - The scale-in and scale-out rules that comprise the automatic scaling policy.

$sel:status:AutoScalingPolicyDescription', autoScalingPolicyDescription_status - The status of an automatic scaling policy.

autoScalingPolicyDescription_constraints :: Lens' AutoScalingPolicyDescription (Maybe ScalingConstraints)

The upper and lower EC2 instance limits for an automatic scaling policy. Automatic scaling activity will not cause an instance group to grow above or below these limits.

autoScalingPolicyDescription_rules :: Lens' AutoScalingPolicyDescription (Maybe [ScalingRule])

The scale-in and scale-out rules that comprise the automatic scaling policy.

autoScalingPolicyDescription_status :: Lens' AutoScalingPolicyDescription (Maybe AutoScalingPolicyStatus)

The status of an automatic scaling policy.