Package com.amazonaws.services.elasticmapreduce.util

Class BootstrapActions

java.lang.Object

com.amazonaws.services.elasticmapreduce.util.BootstrapActions

public class BootstrapActions
extends Object

Class that provides helper methods for constructing predefined bootstrap actions.

 AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
 AmazonElasticMapReduce emr = new AmazonElasticMapReduceClient(credentials);

 BootstrapActions bootstrapActions = new BootstrapActions();

 RunJobFlowRequest request = new RunJobFlowRequest()
       .withName("Job Flow With Bootstrap Actions")
       .withBootstrapActions(
             bootstrapActions.newRunIf(
                 "instance.isMaster=true",
                 bootstrapActions.newConfigureDaemons()
                     .withHeapSize(Daemon.JobTracker, 2048)
                     .build()))
       .withLogUri("s3://log-bucket/")
       .withInstances(new JobFlowInstancesConfig()
            .withEc2KeyName("keypair")
            .withHadoopVersion("0.20")
            .withInstanceCount(5)
            .withKeepJobFlowAliveWhenNoSteps(true)
            .withMasterInstanceType("m1.small")
            .withSlaveInstanceType("m1.small"));

 RunJobFlowResult result = emr.runJobFlow(request);
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	BootstrapActions.ConfigFile	Enum specifying all valid config files.
class	BootstrapActions.ConfigureDaemons
class	BootstrapActions.ConfigureHadoop	Deprecated.
static enum	BootstrapActions.Daemon	List of Hadoop daemons which can be configured.

Constructor Summary

Constructors

Constructor	Description
BootstrapActions()	Creates a new default BootstrapActions for us in us-east-1.
BootstrapActions(String bucket)	Creates a new BootstrapActions.

Method Summary

Modifier and Type	Method	Description
BootstrapActions.ConfigureDaemons	newConfigureDaemons()	Create a new bootstrap action which lets you configure Hadoop's daemons.
BootstrapActions.ConfigureHadoop	newConfigureHadoop()	Create a new bootstrap action which lets you configure Hadoop's XML files.
BootstrapActionConfig	newRunIf(String condition, BootstrapActionConfig config)	Create a new run-if bootstrap action which lets you conditionally run bootstrap actions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

BootstrapActions

public BootstrapActions()

Creates a new default BootstrapActions for us in us-east-1.

BootstrapActions

public BootstrapActions(String bucket)

Creates a new BootstrapActions.

Parameters:

bucket - the bucket from which to download the bootstrap actions.

Method Details

newRunIf

public BootstrapActionConfig newRunIf(String condition,
 BootstrapActionConfig config)

Create a new run-if bootstrap action which lets you conditionally run bootstrap actions.

Parameters:

condition - The condition to evaluate, if true the bootstrap action executes.

config - The bootstrap action to execute in case of successful evaluation.

Returns:

A BootstrapActionConfig to be provided when running a job flow.

newConfigureHadoop

public BootstrapActions.ConfigureHadoop newConfigureHadoop()

Create a new bootstrap action which lets you configure Hadoop's XML files. ConfigureHadoop is deprecated. Use

invalid reference

.elasticmapreduce.model.RunJobFlowRequest#setConfigurations

instead. For more information see,

newConfigureDaemons

public BootstrapActions.ConfigureDaemons newConfigureDaemons()

Create a new bootstrap action which lets you configure Hadoop's daemons. The options are written to the hadoop-user-env.sh file.