org.apache.slider.core.build

Class InstanceIO

java.lang.Object

org.apache.slider.core.build.InstanceIO

public class InstanceIO
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	log

Constructor Summary

Constructors

Constructor and Description
InstanceIO()

Method Summary

Methods

Modifier and Type	Method and Description
static AggregateConf	loadInstanceDefinitionUnresolved(CoreFileSystem sliderFileSystem, org.apache.hadoop.fs.Path clusterDirectory) Load in an instance definition -but do not resolve it
static void	saveInstanceDefinition(CoreFileSystem coreFS, org.apache.hadoop.fs.Path dir, AggregateConf instanceDefinition) Update a persisted instance definition

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.slf4j.Logger log

Constructor Detail

InstanceIO

public InstanceIO()

Method Detail

loadInstanceDefinitionUnresolved

public static AggregateConf loadInstanceDefinitionUnresolved(CoreFileSystem sliderFileSystem,
                                             org.apache.hadoop.fs.Path clusterDirectory)
                                                      throws IOException,
                                                             SliderException

Load in an instance definition -but do not resolve it

Parameters:

sliderFileSystem - filesystem

clusterDirectory - CD

Returns:

the unresolved aggregate configuration

Throws:

IOException

SliderException

BadClusterStateException - if a lock could not be acquired

saveInstanceDefinition

public static void saveInstanceDefinition(CoreFileSystem coreFS,
                          org.apache.hadoop.fs.Path dir,
                          AggregateConf instanceDefinition)
                                   throws SliderException,
                                          IOException,
                                          LockAcquireFailedException

Update a persisted instance definition

Parameters:

coreFS - filesystem

dir - directory to load from

instanceDefinition - instance definition to save do

Throws:

SliderException

IOException

LockAcquireFailedException