| Copyright | (c) 2013-2021 Brendan Hay |
|---|---|
| License | Mozilla Public License, v. 2.0. |
| Maintainer | Brendan Hay <brendan.g.hay+amazonka@gmail.com> |
| Stability | auto-generated |
| Portability | non-portable (GHC extensions) |
| Safe Haskell | None |
Amazonka.EMR.AddJobFlowSteps
Description
AddJobFlowSteps adds new steps to a running cluster. A maximum of 256 steps are allowed in each job flow.
If your cluster is long-running (such as a Hive data warehouse) or complex, you may require more than 256 steps to process your data. You can bypass the 256-step limitation in various ways, including using SSH to connect to the master node and submitting queries directly to the software running on the master node, such as Hive and Hadoop. For more information on how to do this, see Add More than 256 Steps to a Cluster in the Amazon EMR Management Guide.
A step specifies the location of a JAR file stored either on the master node of the cluster or in Amazon S3. Each step is performed by the main function of the main class of the JAR file. The main class can be specified either in the manifest of the JAR or by using the MainFunction parameter of the step.
Amazon EMR executes each step in the order listed. For a step to be considered complete, the main function must exit with a zero exit code and all Hadoop jobs started while the step was running must have completed and run successfully.
You can only add steps to a cluster that is in one of the following states: STARTING, BOOTSTRAPPING, RUNNING, or WAITING.
Synopsis
- data AddJobFlowSteps = AddJobFlowSteps' {
- jobFlowId :: Text
- steps :: [StepConfig]
- newAddJobFlowSteps :: Text -> AddJobFlowSteps
- addJobFlowSteps_jobFlowId :: Lens' AddJobFlowSteps Text
- addJobFlowSteps_steps :: Lens' AddJobFlowSteps [StepConfig]
- data AddJobFlowStepsResponse = AddJobFlowStepsResponse' {
- stepIds :: Maybe [Text]
- httpStatus :: Int
- newAddJobFlowStepsResponse :: Int -> AddJobFlowStepsResponse
- addJobFlowStepsResponse_stepIds :: Lens' AddJobFlowStepsResponse (Maybe [Text])
- addJobFlowStepsResponse_httpStatus :: Lens' AddJobFlowStepsResponse Int
Creating a Request
data AddJobFlowSteps Source #
The input argument to the AddJobFlowSteps operation.
See: newAddJobFlowSteps smart constructor.
Constructors
| AddJobFlowSteps' | |
Fields
| |
Instances
Arguments
| :: Text | |
| -> AddJobFlowSteps |
Create a value of AddJobFlowSteps 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:jobFlowId:AddJobFlowSteps', addJobFlowSteps_jobFlowId - A string that uniquely identifies the job flow. This identifier is
returned by RunJobFlow and can also be obtained from ListClusters.
$sel:steps:AddJobFlowSteps', addJobFlowSteps_steps - A list of StepConfig to be executed by the job flow.
Request Lenses
addJobFlowSteps_jobFlowId :: Lens' AddJobFlowSteps Text Source #
A string that uniquely identifies the job flow. This identifier is returned by RunJobFlow and can also be obtained from ListClusters.
addJobFlowSteps_steps :: Lens' AddJobFlowSteps [StepConfig] Source #
A list of StepConfig to be executed by the job flow.
Destructuring the Response
data AddJobFlowStepsResponse Source #
The output for the AddJobFlowSteps operation.
See: newAddJobFlowStepsResponse smart constructor.
Constructors
| AddJobFlowStepsResponse' | |
Fields
| |
Instances
newAddJobFlowStepsResponse Source #
Create a value of AddJobFlowStepsResponse 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:stepIds:AddJobFlowStepsResponse', addJobFlowStepsResponse_stepIds - The identifiers of the list of steps added to the job flow.
$sel:httpStatus:AddJobFlowStepsResponse', addJobFlowStepsResponse_httpStatus - The response's http status code.
Response Lenses
addJobFlowStepsResponse_stepIds :: Lens' AddJobFlowStepsResponse (Maybe [Text]) Source #
The identifiers of the list of steps added to the job flow.
addJobFlowStepsResponse_httpStatus :: Lens' AddJobFlowStepsResponse Int Source #
The response's http status code.