Package org.apache.hadoop.yarn.service.monitor.probe

Class DefaultProbe

java.lang.Object

org.apache.hadoop.yarn.service.monitor.probe.Probe

org.apache.hadoop.yarn.service.monitor.probe.DefaultProbe

All Implemented Interfaces:

MonitorKeys

Direct Known Subclasses:

HttpProbe, PortProbe

public class DefaultProbe
extends Probe

A probe that checks whether the AM has retrieved an IP for a container. Optional parameters enable a subsequent check for whether a DNS lookup can be performed for the container's hostname. Configurable properties include: dns.check.enabled - true if DNS check should be performed (default false) dns.address - optional IP:port address of DNS server to use for DNS check

Field Summary

Fields inherited from interface org.apache.hadoop.yarn.service.monitor.probe.MonitorKeys

DEFAULT_PROBE_DNS_ADDRESS, DEFAULT_PROBE_DNS_CHECK_ENABLED, DEFAULT_PROBE_DNS_CHECK_ENABLED_DEFAULT, PORT_PROBE_CONNECT_TIMEOUT, PORT_PROBE_CONNECT_TIMEOUT_DEFAULT, PORT_PROBE_PORT, WEB_PROBE_CONNECT_TIMEOUT, WEB_PROBE_CONNECT_TIMEOUT_DEFAULT, WEB_PROBE_MAX_SUCCESS, WEB_PROBE_MAX_SUCCESS_DEFAULT, WEB_PROBE_MIN_SUCCESS, WEB_PROBE_MIN_SUCCESS_DEFAULT, WEB_PROBE_URL

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DefaultProbe(String name, Map<String,String> props)
	DefaultProbe(Map<String,String> props)

Method Summary

Modifier and Type	Method	Description
static DefaultProbe	create()
static DefaultProbe	create(Map<String,String> props)
protected boolean	isDnsCheckEnabled()
ProbeStatus	ping(ComponentInstance instance)	Ping the endpoint.

Methods inherited from class org.apache.hadoop.yarn.service.monitor.probe.Probe

getName, getProperty, getPropertyBool, getPropertyInt, init, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultProbe

public DefaultProbe(Map<String,String> props)

DefaultProbe

protected DefaultProbe(String name,
 Map<String,String> props)

Method Details

create

public static DefaultProbe create()
                           throws IOException

Throws:

IOException

create

public static DefaultProbe create(Map<String,String> props)
                           throws IOException

Throws:

IOException

ping

public ProbeStatus ping(ComponentInstance instance)

Description copied from class: Probe

Ping the endpoint. All exceptions must be caught and included in the (failure) status.

Specified by:

ping in class Probe

Parameters:

instance - instance to ping

Returns:

the status

isDnsCheckEnabled

protected boolean isDnsCheckEnabled()