org.apache.slider.api

Class ClusterNode

java.lang.Object

org.apache.slider.api.ClusterNode

All Implemented Interfaces:

Cloneable

public final class ClusterNode
extends Object
implements Cloneable

Describe a specific node in the cluster

Field Summary

Fields

Modifier and Type	Field and Description
String	command what was the command executed?
org.apache.hadoop.yarn.api.records.ContainerId	containerId
long	createTime
String	diagnostics Any diagnostics
String[]	environment Any environment details
int	exitCode Exit code: only valid if the state >= STOPPED
String	host
String	hostUrl
String	id UUID of container used in Slider RPC to refer to instances
protected static org.slf4j.Logger	LOG
String	name server name
String[]	output What is the tail output from the executed process (or [] if not started or the log cannot be picked up
boolean	released flag set when it is released, to know if it has already been targeted for termination
String	role
int	roleId
long	startTime
int	state state from ClusterDescription

Constructor Summary

Constructors

Constructor and Description
ClusterNode() ctor for deserialization
ClusterNode(org.apache.hadoop.yarn.api.records.ContainerId containerId) server-side ctor takes the container ID and builds the name from it

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
ClusterNode	doClone()
static ClusterNode	fromJson(String json) Convert from JSON
static ClusterNode	fromProtobuf(Messages.RoleInstanceState message) Build from a protobuf response
String	toJsonString() Convert to a JSON string
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

containerId

public org.apache.hadoop.yarn.api.records.ContainerId containerId

name

public String name

server name

id

public String id

UUID of container used in Slider RPC to refer to instances

role

public String role

roleId

public int roleId

createTime

public long createTime

startTime

public long startTime

released

public boolean released

flag set when it is released, to know if it has already been targeted for termination

host

public String host

hostUrl

public String hostUrl

state

public int state

state from ClusterDescription

exitCode

public int exitCode

Exit code: only valid if the state >= STOPPED

command

public String command

what was the command executed?

diagnostics

public String diagnostics

Any diagnostics

output

public String[] output

What is the tail output from the executed process (or [] if not started or the log cannot be picked up

environment

public String[] environment

Any environment details

Constructor Detail

ClusterNode

public ClusterNode(org.apache.hadoop.yarn.api.records.ContainerId containerId)

server-side ctor takes the container ID and builds the name from it

Parameters:

containerId - container ID; can be null

ClusterNode

public ClusterNode()

ctor for deserialization

Method Detail

toString

public String toString()

Overrides:

toString in class Object

toJsonString

public String toJsonString()
                    throws IOException

Convert to a JSON string

Returns:

a JSON string description

Throws:

IOException - Problems mapping/writing the object

fromJson

public static ClusterNode fromJson(String json)
                            throws IOException,
                                   org.codehaus.jackson.JsonParseException,
                                   org.codehaus.jackson.map.JsonMappingException

Convert from JSON

Parameters:

json - input

Returns:

the parsed JSON

Throws:

IOException - IO

org.codehaus.jackson.JsonParseException

org.codehaus.jackson.map.JsonMappingException

fromProtobuf

public static ClusterNode fromProtobuf(Messages.RoleInstanceState message)

Build from a protobuf response

Parameters:

message -

Returns:

the deserialized node

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

doClone

public ClusterNode doClone()