EmrConfiguration

The EmrConfiguration object is the configuration used for EMR clusters with releases 4.0.0 or greater. Configurations (as a list) is a parameter to the RunJobFlow API call. The configuration API for Amazon EMR takes a classification and properties. AWS Data Pipeline uses EmrConfiguration with corresponding Property objects to configure an EmrCluster application such as Hadoop, Hive, Spark, or Pig on EMR clusters launched in a pipeline execution. Because configuration can only be changed for new clusters, you cannot provide a EmrConfiguration object for existing resources. For more information, see http://docs.aws.amazon.com/ElasticMapReduce/latest/ReleaseGuide/.

Example

The following configuration object sets the io.file.buffer.size and fs.s3.block.size properties in core-site.xml:


[
   {  
      "classification":"core-site",
      "properties":
      {
         "io.file.buffer.size": "4096",
         "fs.s3.block.size": "67108864"
      }
   }
]

The corresponding pipeline object definition uses a EmrConfiguration object and a list of Property objects in the property field:


{
  "objects": [
    {
      "name": "ReleaseLabelCluster",
      "releaseLabel": "emr-4.1.0",
      "applications": ["spark", "hive", "pig"],
      "id": "ResourceId_I1mCc",
      "type": "EmrCluster",
      "configuration": {
        "ref": "coresite"
      }
    },
    {
      "name": "coresite",
      "id": "coresite",
      "type": "EmrConfiguration",
      "classification": "core-site",
      "property": [{
        "ref": "io-file-buffer-size"
      },
      {
        "ref": "fs-s3-block-size"
      }
      ]
    },
    {
      "name": "io-file-buffer-size",
      "id": "io-file-buffer-size",
      "type": "Property",
      "key": "io.file.buffer.size",
      "value": "4096"
    },
    {
      "name": "fs-s3-block-size",
      "id": "fs-s3-block-size",
      "type": "Property",
      "key": "fs.s3.block.size",
      "value": "67108864"
    }
  ]
}

The following example is a nested configuration used to set the Hadoop environment with the hadoop-env classification:


[
  {
    "classification": "hadoop-env",
    "properties": {},
    "configurations": [
      {
        "classification": "export",
        "properties": {
          "YARN_PROXYSERVER_HEAPSIZE": "2396"
        }
      }
    ]
  }
]

The corresponding pipeline definition object that uses this configuration is below:


{
  "objects": [
    {
      "name": "ReleaseLabelCluster",
      "releaseLabel": "emr-4.0.0",
      "applications": ["spark", "hive", "pig"],
      "id": "ResourceId_I1mCc",
      "type": "EmrCluster",
      "configuration": {
        "ref": "hadoop-env"
      }
    },
    {
      "name": "hadoop-env",
      "id": "hadoop-env",
      "type": "EmrConfiguration",
      "classification": "hadoop-env",
      "configuration": {
        "ref": "export"
      }
    },
    {
      "name": "export",
      "id": "export",
      "type": "EmrConfiguration",
      "classification": "export",
      "property": {
        "ref": "yarn-proxyserver-heapsize"
      }
    },
    {
      "name": "yarn-proxyserver-heapsize",
      "id": "yarn-proxyserver-heapsize",
      "type": "Property",
      "key": "YARN_PROXYSERVER_HEAPSIZE",
      "value": "2396"
    },
  ]
}

The following example modifies a Hive-specific property for an EMR cluster:


{
    "objects": [
        {
            "name": "hivesite",
            "id": "hivesite",
            "type": "EmrConfiguration",
            "classification": "hive-site",
            "property": [
                {
                    "ref": "hive-client-timeout"
                }
            ]
        },
        {
            "name": "hive-client-timeout",
            "id": "hive-client-timeout",
            "type": "Property",
            "key": "hive.metastore.client.socket.timeout",
            "value": "2400s"
        }
    ]
}

Syntax

This object includes the following fields.

Required Fields	Description	Slot Type
classification	Classification for the configuration.	String

Optional Fields	Description	Slot Type
configuration	Sub-configuration for this configuration.	Reference Object, e.g. "configuration":{"ref":"myEmrConfigurationId"}
parent	Parent of the current object from which slots will be inherited.	Reference Object, e.g. "parent":{"ref":"myBaseObjectId"}
property	Configuration property.	Reference Object, e.g. "property":{"ref":"myPropertyId"}

Runtime Fields	Description	Slot Type
@version	Pipeline version the object was created with.	String

System Fields	Description	Slot Type
@error	Error describing the ill-formed object	String
@pipelineId	Id of the pipeline to which this object belongs to	String
@sphere	The sphere of an object denotes its place in the lifecycle: Component Objects give rise to Instance Objects which execute Attempt Objects	String

EmrConfiguration

Example

Syntax

See Also