Package com.amazonaws.services.elasticmapreduce

Class AbstractAmazonElasticMapReduce

java.lang.Object
com.amazonaws.services.elasticmapreduce.AbstractAmazonElasticMapReduce
All Implemented Interfaces:
AmazonElasticMapReduce
Direct Known Subclasses:
AbstractAmazonElasticMapReduceAsync
public class AbstractAmazonElasticMapReduce extends Object implements AmazonElasticMapReduce
Abstract implementation of AmazonElasticMapReduce. Convenient method forms pass through to the corresponding overload that takes a request object, which throws an UnsupportedOperationException.

  • Constructor Details

    • AbstractAmazonElasticMapReduce

      protected AbstractAmazonElasticMapReduce()

  • Method Details

    • setEndpoint

      public void setEndpoint(String endpoint)
      Description copied from interface: AmazonElasticMapReduce
      Overrides the default endpoint for this client ("https://elasticmapreduce.amazonaws.com"). Callers can use this method to control which AWS region they want to work with.

      Callers can pass in just the endpoint (ex: "elasticmapreduce.amazonaws.com") or a full URL, including the protocol (ex: "https://elasticmapreduce.amazonaws.com"). If the protocol is not specified here, the default protocol from this client's ClientConfiguration will be used, which by default is HTTPS.

      For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID= 3912

      This method is not threadsafe. An endpoint should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.

      Specified by:
      setEndpoint in interface AmazonElasticMapReduce
      Parameters:
      endpoint - The endpoint (ex: "elasticmapreduce.amazonaws.com") or a full URL, including the protocol (ex: "https://elasticmapreduce.amazonaws.com") of the region specific AWS endpoint this client will communicate with.

    • setRegion

      public void setRegion(Region region)
      Description copied from interface: AmazonElasticMapReduce
      An alternative to AmazonElasticMapReduce.setEndpoint(String), sets the regional endpoint for this client's service calls. Callers can use this method to control which AWS region they want to work with.

      By default, all service endpoints in all regions use the https protocol. To use http instead, specify it in the ClientConfiguration supplied at construction.

      This method is not threadsafe. A region should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.

      Specified by:
      setRegion in interface AmazonElasticMapReduce
      Parameters:
      region - The region this client will communicate with. See Region.getRegion(com.amazonaws.regions.Regions) for accessing a given region. Must not be null and must be a region where the service is available.
      See Also:

    • addInstanceGroups

      public AddInstanceGroupsResult addInstanceGroups(AddInstanceGroupsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      AddInstanceGroups adds an instance group to a running cluster.

      Specified by:
      addInstanceGroups in interface AmazonElasticMapReduce
      Parameters:
      request - Input to an AddInstanceGroups call.
      Returns:
      Result of the AddInstanceGroups operation returned by the service.

    • addJobFlowSteps

      public AddJobFlowStepsResult addJobFlowSteps(AddJobFlowStepsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      AddJobFlowSteps adds new steps to a running job flow. 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 Elastic MapReduce Developer's Guide.

      A step specifies the location of a JAR file stored either on the master node of the job flow 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.

      Elastic MapReduce 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 job flow that is in one of the following states: STARTING, BOOTSTRAPPING, RUNNING, or WAITING.

      Specified by:
      addJobFlowSteps in interface AmazonElasticMapReduce
      Parameters:
      request - The input argument to the AddJobFlowSteps operation.
      Returns:
      Result of the AddJobFlowSteps operation returned by the service.

    • addTags

      public AddTagsResult addTags(AddTagsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Adds tags to an Amazon EMR resource. Tags make it easier to associate clusters in various ways, such as grouping clusters to track your Amazon EMR resource allocation costs. For more information, see Tagging Amazon EMR Resources.

      Specified by:
      addTags in interface AmazonElasticMapReduce
      Parameters:
      request - This input identifies a cluster and a list of tags to attach.
      Returns:
      Result of the AddTags operation returned by the service.

    • describeCluster

      public DescribeClusterResult describeCluster(DescribeClusterRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides cluster-level details including status, hardware and software configuration, VPC settings, and so on. For information about the cluster steps, see ListSteps.

      Specified by:
      describeCluster in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which cluster to describe.
      Returns:
      Result of the DescribeCluster operation returned by the service.

    • describeJobFlows

      @Deprecated public DescribeJobFlowsResult describeJobFlows(DescribeJobFlowsRequest request)
      Deprecated.
      Description copied from interface: AmazonElasticMapReduce

      This API is deprecated and will eventually be removed. We recommend you use ListClusters, DescribeCluster, ListSteps, ListInstanceGroups and ListBootstrapActions instead.

      DescribeJobFlows returns a list of job flows that match all of the supplied parameters. The parameters can include a list of job flow IDs, job flow states, and restrictions on job flow creation date and time.

      Regardless of supplied parameters, only job flows created within the last two months are returned.

      If no parameters are supplied, then job flows matching either of the following criteria are returned:

      • Job flows created and completed in the last two weeks
      • Job flows created within the last two months that are in one of the following states: RUNNING, WAITING, SHUTTING_DOWN, STARTING

      Amazon Elastic MapReduce can return a maximum of 512 job flow descriptions.

      Specified by:
      describeJobFlows in interface AmazonElasticMapReduce
      Parameters:
      request - The input for the DescribeJobFlows operation.
      Returns:
      Result of the DescribeJobFlows operation returned by the service.

    • describeJobFlows

      @Deprecated public DescribeJobFlowsResult describeJobFlows()
      Deprecated.
      Description copied from interface: AmazonElasticMapReduce
      Simplified method form for invoking the DescribeJobFlows operation.
      Specified by:
      describeJobFlows in interface AmazonElasticMapReduce
      See Also:

    • describeStep

      public DescribeStepResult describeStep(DescribeStepRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides more detail about the cluster step.

      Specified by:
      describeStep in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which step to describe.
      Returns:
      Result of the DescribeStep operation returned by the service.

    • listBootstrapActions

      public ListBootstrapActionsResult listBootstrapActions(ListBootstrapActionsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides information about the bootstrap actions associated with a cluster.

      Specified by:
      listBootstrapActions in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which bootstrap actions to retrieve.
      Returns:
      Result of the ListBootstrapActions operation returned by the service.

    • listClusters

      public ListClustersResult listClusters(ListClustersRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides the status of all clusters visible to this AWS account. Allows you to filter the list of clusters based on certain criteria; for example, filtering by cluster creation date and time or by status. This call returns a maximum of 50 clusters per call, but returns a marker to track the paging of the cluster list across multiple ListClusters calls.

      Specified by:
      listClusters in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines how the ListClusters action filters the list of clusters that it returns.
      Returns:
      Result of the ListClusters operation returned by the service.

    • listClusters

      public ListClustersResult listClusters()
      Description copied from interface: AmazonElasticMapReduce
      Simplified method form for invoking the ListClusters operation.
      Specified by:
      listClusters in interface AmazonElasticMapReduce
      See Also:

    • listInstanceGroups

      public ListInstanceGroupsResult listInstanceGroups(ListInstanceGroupsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides all available details about the instance groups in a cluster.

      Specified by:
      listInstanceGroups in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which instance groups to retrieve.
      Returns:
      Result of the ListInstanceGroups operation returned by the service.

    • listInstances

      public ListInstancesResult listInstances(ListInstancesRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides information about the cluster instances that Amazon EMR provisions on behalf of a user when it creates the cluster. For example, this operation indicates when the EC2 instances reach the Ready state, when instances become available to Amazon EMR to use for jobs, and the IP addresses for cluster instances, etc.

      Specified by:
      listInstances in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which instances to list.
      Returns:
      Result of the ListInstances operation returned by the service.

    • listSteps

      public ListStepsResult listSteps(ListStepsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Provides a list of steps for the cluster.

      Specified by:
      listSteps in interface AmazonElasticMapReduce
      Parameters:
      request - This input determines which steps to list.
      Returns:
      Result of the ListSteps operation returned by the service.

    • modifyInstanceGroups

      public ModifyInstanceGroupsResult modifyInstanceGroups(ModifyInstanceGroupsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      ModifyInstanceGroups modifies the number of nodes and configuration settings of an instance group. The input parameters include the new target instance count for the group and the instance group ID. The call will either succeed or fail atomically.

      Specified by:
      modifyInstanceGroups in interface AmazonElasticMapReduce
      Parameters:
      request - Change the size of some instance groups.
      Returns:
      Result of the ModifyInstanceGroups operation returned by the service.

    • modifyInstanceGroups

      public ModifyInstanceGroupsResult modifyInstanceGroups()
      Description copied from interface: AmazonElasticMapReduce
      Simplified method form for invoking the ModifyInstanceGroups operation.
      Specified by:
      modifyInstanceGroups in interface AmazonElasticMapReduce
      See Also:

    • removeTags

      public RemoveTagsResult removeTags(RemoveTagsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Removes tags from an Amazon EMR resource. Tags make it easier to associate clusters in various ways, such as grouping clusters to track your Amazon EMR resource allocation costs. For more information, see Tagging Amazon EMR Resources.

      The following example removes the stack tag with value Prod from a cluster:

      Specified by:
      removeTags in interface AmazonElasticMapReduce
      Parameters:
      request - This input identifies a cluster and a list of tags to remove.
      Returns:
      Result of the RemoveTags operation returned by the service.

    • runJobFlow

      public RunJobFlowResult runJobFlow(RunJobFlowRequest request)
      Description copied from interface: AmazonElasticMapReduce

      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 Elastic MapReduce Developer's Guide.

      For long running job flows, we recommend that you periodically store your results.

      Specified by:
      runJobFlow in interface AmazonElasticMapReduce
      Parameters:
      request - Input to the RunJobFlow operation.
      Returns:
      Result of the RunJobFlow operation returned by the service.

    • setTerminationProtection

      public SetTerminationProtectionResult setTerminationProtection(SetTerminationProtectionRequest request)
      Description copied from interface: AmazonElasticMapReduce

      SetTerminationProtection locks a job flow so the Amazon EC2 instances in the cluster cannot be terminated by user intervention, an API call, or in the event of a job-flow error. The cluster still terminates upon successful completion of the job flow. Calling SetTerminationProtection on a job flow is analogous to calling the Amazon EC2 DisableAPITermination API on all of the EC2 instances in a cluster.

      SetTerminationProtection is used to prevent accidental termination of a job flow and to ensure that in the event of an error, the instances will persist so you can recover any data stored in their ephemeral instance storage.

      To terminate a job flow that has been locked by setting SetTerminationProtection to true, you must first unlock the job flow by a subsequent call to SetTerminationProtection in which you set the value to false.

      For more information, go to Protecting a Job Flow from Termination in the Amazon Elastic MapReduce Developer's Guide.

      Specified by:
      setTerminationProtection in interface AmazonElasticMapReduce
      Parameters:
      request - The input argument to the TerminationProtection operation.
      Returns:
      Result of the SetTerminationProtection operation returned by the service.

    • setVisibleToAllUsers

      public SetVisibleToAllUsersResult setVisibleToAllUsers(SetVisibleToAllUsersRequest request)
      Description copied from interface: AmazonElasticMapReduce

      Sets whether all AWS Identity and Access Management (IAM) users under your account can access the specified job flows. This action works on running job flows. You can also set the visibility of a job flow when you launch it using the VisibleToAllUsers parameter of RunJobFlow. The SetVisibleToAllUsers action can be called only by an IAM user who created the job flow or the AWS account that owns the job flow.

      Specified by:
      setVisibleToAllUsers in interface AmazonElasticMapReduce
      Parameters:
      request - The input to the SetVisibleToAllUsers action.
      Returns:
      Result of the SetVisibleToAllUsers operation returned by the service.

    • terminateJobFlows

      public TerminateJobFlowsResult terminateJobFlows(TerminateJobFlowsRequest request)
      Description copied from interface: AmazonElasticMapReduce

      TerminateJobFlows shuts a list of job flows down. When a job flow is shut down, any step not yet completed is canceled and the EC2 instances on which the job flow is running are stopped. Any log files not already saved are uploaded to Amazon S3 if a LogUri was specified when the job flow was created.

      The maximum number of JobFlows allowed is 10. The call to TerminateJobFlows is asynchronous. Depending on the configuration of the job flow, it may take up to 5-20 minutes for the job flow to completely terminate and release allocated resources, such as Amazon EC2 instances.

      Specified by:
      terminateJobFlows in interface AmazonElasticMapReduce
      Parameters:
      request - Input to the TerminateJobFlows operation.
      Returns:
      Result of the TerminateJobFlows operation returned by the service.

    • shutdown

      public void shutdown()
      Description copied from interface: AmazonElasticMapReduce
      Shuts down this client object, releasing any resources that might be held open. This is an optional method, and callers are not expected to call it, but can if they want to explicitly release any open resources. Once a client has been shutdown, it should not be used to make any more requests.
      Specified by:
      shutdown in interface AmazonElasticMapReduce

    • getCachedResponseMetadata

      public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)
      Description copied from interface: AmazonElasticMapReduce
      Returns additional metadata for a previously executed successful request, typically used for debugging issues where a service isn't acting as expected. This data isn't considered part of the result data returned by an operation, so it's available through this separate, diagnostic interface.

      Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing a request.

      Specified by:
      getCachedResponseMetadata in interface AmazonElasticMapReduce
      Parameters:
      request - The originally executed request.
      Returns:
      The response metadata for the specified request, or null if none is available.