Safe Haskell | None |
---|---|
Language | Haskell2010 |
RunJobFlow creates and starts running a new job flow. The job flow will run
the steps specified. Once the job flow completes, the cluster is stopped and
the HDFS partition is lost. To prevent loss of data, configure the last step
of the job flow to store results in Amazon S3. If the JobFlowInstancesConfig
KeepJobFlowAliveWhenNoSteps
parameter is set to TRUE
, the job flow will transition to the WAITING state
rather than shutting down once the steps have completed.
For additional protection, you can set the JobFlowInstancesConfig
TerminationProtected
parameter to TRUE
to lock the job flow and prevent it from being terminated
by API call, user intervention, or in the event of a job flow error.
A maximum of 256 steps are allowed in each job flow.
If your job flow 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 the SSH shell 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, go to Add More than 256 Steps to a Job Flow in the Amazon ElasticMapReduce Developer's Guide.
For long running job flows, we recommend that you periodically store your results.
http://docs.aws.amazon.com/ElasticMapReduce/latest/API/API_RunJobFlow.html
- data RunJobFlow
- runJobFlow :: Text -> JobFlowInstancesConfig -> RunJobFlow
- rjfAdditionalInfo :: Lens' RunJobFlow (Maybe Text)
- rjfAmiVersion :: Lens' RunJobFlow (Maybe Text)
- rjfBootstrapActions :: Lens' RunJobFlow [BootstrapActionConfig]
- rjfInstances :: Lens' RunJobFlow JobFlowInstancesConfig
- rjfJobFlowRole :: Lens' RunJobFlow (Maybe Text)
- rjfLogUri :: Lens' RunJobFlow (Maybe Text)
- rjfName :: Lens' RunJobFlow Text
- rjfNewSupportedProducts :: Lens' RunJobFlow [SupportedProductConfig]
- rjfServiceRole :: Lens' RunJobFlow (Maybe Text)
- rjfSteps :: Lens' RunJobFlow [StepConfig]
- rjfSupportedProducts :: Lens' RunJobFlow [Text]
- rjfTags :: Lens' RunJobFlow [Tag]
- rjfVisibleToAllUsers :: Lens' RunJobFlow (Maybe Bool)
- data RunJobFlowResponse
- runJobFlowResponse :: RunJobFlowResponse
- rjfrJobFlowId :: Lens' RunJobFlowResponse (Maybe Text)
Request
data RunJobFlow Source
Request constructor
RunJobFlow
constructor.
The fields accessible through corresponding lenses are:
rjfAdditionalInfo
::
Maybe
Text
rjfAmiVersion
::
Maybe
Text
rjfBootstrapActions
::
[BootstrapActionConfig
]rjfInstances
::
JobFlowInstancesConfig
rjfJobFlowRole
::
Maybe
Text
rjfLogUri
::
Maybe
Text
rjfName
::
Text
rjfNewSupportedProducts
::
[SupportedProductConfig
]rjfServiceRole
::
Maybe
Text
rjfSteps
::
[StepConfig
]rjfSupportedProducts
::
[Text
]rjfTags
::
[Tag
]rjfVisibleToAllUsers
::
Maybe
Bool
Request lenses
rjfAdditionalInfo :: Lens' RunJobFlow (Maybe Text) Source
A JSON string for selecting additional features.
rjfAmiVersion :: Lens' RunJobFlow (Maybe Text) Source
The version of the Amazon Machine Image (AMI) to use when launching Amazon EC2 instances in the job flow. The following values are valid:
"latest" (uses the latest AMI) The version number of the AMI to use, for
example, "2.0" If the AMI supports multiple versions of Hadoop (for example,
AMI 1.0 supports both Hadoop 0.18 and 0.20) you can use the JobFlowInstancesConfig
HadoopVersion
parameter to modify the version of Hadoop from the defaults
shown above.
For details about the AMI versions currently supported by Amazon Elastic MapReduce, go to AMI Versions Supported in Elastic MapReduce in the AmazonElastic MapReduce Developer's Guide.
rjfBootstrapActions :: Lens' RunJobFlow [BootstrapActionConfig] Source
A list of bootstrap actions that will be run before Hadoop is started on the cluster nodes.
rjfInstances :: Lens' RunJobFlow JobFlowInstancesConfig Source
A specification of the number and type of Amazon EC2 instances on which to run the job flow.
rjfJobFlowRole :: Lens' RunJobFlow (Maybe Text) Source
An IAM role for the job flow. The EC2 instances of the job flow assume this
role. The default role is EMRJobflowDefault
. In order to use the default
role, you must have already created it using the CLI.
rjfLogUri :: Lens' RunJobFlow (Maybe Text) Source
The location in Amazon S3 to write the log files of the job flow. If a value is not provided, logs are not created.
rjfName :: Lens' RunJobFlow Text Source
The name of the job flow.
rjfNewSupportedProducts :: Lens' RunJobFlow [SupportedProductConfig] Source
A list of strings that indicates third-party software to use with the job flow that accepts a user argument list. EMR accepts and forwards the argument list to the corresponding installation script as bootstrap action arguments. For more information, see Launch a Job Flow on the MapR Distribution forHadoop. Currently supported values are:
"mapr-m3" - launch the job flow using MapR M3 Edition. "mapr-m5" - launch the job flow using MapR M5 Edition. "mapr" with the user arguments specifying "--edition,m3" or "--edition,m5" - launch the job flow using MapR M3 or M5 Edition respectively.
rjfServiceRole :: Lens' RunJobFlow (Maybe Text) Source
The IAM role that will be assumed by the Amazon EMR service to access AWS resources on your behalf.
rjfSteps :: Lens' RunJobFlow [StepConfig] Source
A list of steps to be executed by the job flow.
rjfSupportedProducts :: Lens' RunJobFlow [Text] Source
A list of strings that indicates third-party software to use with the job flow. For more information, go to Use Third Party Applications with Amazon EMR . Currently supported values are:
"mapr-m3" - launch the job flow using MapR M3 Edition. "mapr-m5" - launch the job flow using MapR M5 Edition.
rjfTags :: Lens' RunJobFlow [Tag] Source
A list of tags to associate with a cluster and propagate to Amazon EC2 instances.
rjfVisibleToAllUsers :: Lens' RunJobFlow (Maybe Bool) Source
Whether the job flow is visible to all IAM users of the AWS account
associated with the job flow. If this value is set to true
, all IAM users of
that AWS account can view and (if they have the proper policy permissions
set) manage the job flow. If it is set to false
, only the IAM user that
created the job flow can view and manage it.
Response
data RunJobFlowResponse Source
Response constructor
runJobFlowResponse :: RunJobFlowResponse Source
RunJobFlowResponse
constructor.
The fields accessible through corresponding lenses are:
Response lenses
rjfrJobFlowId :: Lens' RunJobFlowResponse (Maybe Text) Source
An unique identifier for the job flow.