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

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and 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 Detail

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 Detail

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.

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.