org.springframework.yarn.test.support
Class StandaloneYarnCluster

java.lang.Object
  org.springframework.yarn.test.support.StandaloneYarnCluster

All Implemented Interfaces:

YarnCluster

public class StandaloneYarnCluster
extends java.lang.Object
implements YarnCluster

Standalone simple mini cluster having Yarn and Hdfs nodes.

Author:

Janne Valkealahti

Constructor Summary

StandaloneYarnCluster(java.lang.String clusterName)
Instantiates a mini cluster with default cluster node count.

StandaloneYarnCluster(java.lang.String clusterName, int nodes)
Instantiates a mini cluster with given cluster node count.

Method Summary

org.apache.hadoop.conf.Configuration	getConfiguration() Gets the Configuration for the cluster.
java.io.File	getYarnWorkDir() Gets the working directory of Yarn nodes.
void	setNodes(int nodes) Sets a number of nodes for cluster.
void	start() Starts the cluster.
void	stop() Stops the cluster.

Methods inherited from class java.lang.Object

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

Constructor Detail

StandaloneYarnCluster

public StandaloneYarnCluster(java.lang.String clusterName)

Instantiates a mini cluster with default cluster node count.

Parameters:

clusterName - the unique cluster name

StandaloneYarnCluster

public StandaloneYarnCluster(java.lang.String clusterName,
                             int nodes)

Instantiates a mini cluster with given cluster node count.

Parameters:

clusterName - the unique cluster name

nodes - the node count

Method Detail

getConfiguration

public org.apache.hadoop.conf.Configuration getConfiguration()

Description copied from interface: YarnCluster

Gets the Configuration for the cluster. As most of the configuration parameters are not known until after cluster has been started, this configuration should be configured by the cluster itself.

Specified by:

getConfiguration in interface YarnCluster

Returns:

the Cluster configured Configuration

start

public void start()
           throws java.io.IOException

Description copied from interface: YarnCluster

Starts the cluster.

Specified by:

start in interface YarnCluster

Throws:

java.io.IOException

stop

public void stop()

Description copied from interface: YarnCluster

Stops the cluster.

Specified by:

stop in interface YarnCluster

getYarnWorkDir

public java.io.File getYarnWorkDir()

Description copied from interface: YarnCluster

Gets the working directory of Yarn nodes. This directory can be used to find log files of running containers.

Specified by:

getYarnWorkDir in interface YarnCluster

Returns:

Yarn working directory.

setNodes

public void setNodes(int nodes)

Sets a number of nodes for cluster. Every node will act as yarn and dfs role. Default is one node.

Parameters:

nodes - the number of nodes