Use Step to specify a cluster (job flow) step, which runs only on the master node. Steps are used to submit data processing jobs to a cluster.
Syntax
To declare this entity in your AWS CloudFormation template, use the following syntax:
JSON
{
"Type" : "AWS::EMR::Step",
"Properties" : {
"ActionOnFailure" : String,
"HadoopJarStep" : HadoopJarStepConfig,
"JobFlowId" : String,
"Name" : String
}
}
YAML
Type: AWS::EMR::Step
Properties:
ActionOnFailure: String
HadoopJarStep:
HadoopJarStepConfig
JobFlowId: String
Name: String
Properties
ActionOnFailure-
This specifies what action to take when the cluster step fails. Possible values are
CANCEL_AND_WAITandCONTINUE.Required: Yes
Type: String
Update requires: Replacement
HadoopJarStep-
The
HadoopJarStepConfigproperty type specifies a job flow step consisting of a JAR file whose main function will be executed. The main function submits a job for the cluster to execute as a step on the master node, and then waits for the job to finish or fail before executing subsequent steps.Required: Yes
Type: HadoopJarStepConfig
Update requires: Replacement
JobFlowId-
A string that uniquely identifies the cluster (job flow).
Required: Yes
Type: String
Pattern:
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*Minimum:
0Maximum:
256Update requires: Replacement
Name-
The name of the cluster step.
Required: Yes
Type: String
Update requires: Replacement
Return values
Ref
When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns returns the ID of the step.
For more information about using the Ref function, see Ref.
Fn::GetAtt
Id-
The identifier of the cluster step.
