org.apache.hadoop.yarn.conf
Class HAUtil

java.lang.Object
  org.apache.hadoop.yarn.conf.HAUtil

@InterfaceAudience.Private
public class HAUtil
extends Object

Field Summary

static String

BAD_CONFIG_MESSAGE_PREFIX

Method Summary

static String	addSuffix(String key, String suffix) Add non empty and non null suffix to a key
static String	getConfValueForRMInstance(String prefix, org.apache.hadoop.conf.Configuration conf)
static String	getConfValueForRMInstance(String prefix, String defaultValue, org.apache.hadoop.conf.Configuration conf)
static String	getRMHAId(org.apache.hadoop.conf.Configuration conf)
static Collection<String>	getRMHAIds(org.apache.hadoop.conf.Configuration conf)
static boolean	isAutomaticFailoverEmbedded(org.apache.hadoop.conf.Configuration conf)
static boolean	isAutomaticFailoverEnabled(org.apache.hadoop.conf.Configuration conf)
static boolean	isAutomaticFailoverEnabledAndEmbedded(org.apache.hadoop.conf.Configuration conf)
static boolean	isHAEnabled(org.apache.hadoop.conf.Configuration conf) Returns true if Resource Manager HA is configured.
static void	verifyAndSetAllServiceAddresses(org.apache.hadoop.conf.Configuration conf)
static void	verifyAndSetConfiguration(org.apache.hadoop.conf.Configuration conf) Verify configuration for Resource Manager HA.

Methods inherited from class java.lang.Object

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

Field Detail

BAD_CONFIG_MESSAGE_PREFIX

public static final String BAD_CONFIG_MESSAGE_PREFIX

See Also:

Constant Field Values

Method Detail

isHAEnabled

public static boolean isHAEnabled(org.apache.hadoop.conf.Configuration conf)

Returns true if Resource Manager HA is configured.

Parameters:

conf - Configuration

Returns:

true if HA is configured in the configuration; else false.

isAutomaticFailoverEnabled

public static boolean isAutomaticFailoverEnabled(org.apache.hadoop.conf.Configuration conf)

isAutomaticFailoverEnabledAndEmbedded

public static boolean isAutomaticFailoverEnabledAndEmbedded(org.apache.hadoop.conf.Configuration conf)

isAutomaticFailoverEmbedded

public static boolean isAutomaticFailoverEmbedded(org.apache.hadoop.conf.Configuration conf)

verifyAndSetConfiguration

public static void verifyAndSetConfiguration(org.apache.hadoop.conf.Configuration conf)
                                      throws YarnRuntimeException

Verify configuration for Resource Manager HA.

Parameters:

conf - Configuration

Throws:

YarnRuntimeException

verifyAndSetAllServiceAddresses

public static void verifyAndSetAllServiceAddresses(org.apache.hadoop.conf.Configuration conf)

getRMHAIds

public static Collection<String> getRMHAIds(org.apache.hadoop.conf.Configuration conf)

Parameters:

conf - Configuration. Please use getRMHAIds to check.

Returns:

RM Ids on success

getRMHAId

public static String getRMHAId(org.apache.hadoop.conf.Configuration conf)

Parameters:

conf - Configuration. Please use verifyAndSetRMHAId to check.

Returns:

RM Id on success

getConfValueForRMInstance

public static String getConfValueForRMInstance(String prefix,
                                               org.apache.hadoop.conf.Configuration conf)

getConfValueForRMInstance

public static String getConfValueForRMInstance(String prefix,
                                               String defaultValue,
                                               org.apache.hadoop.conf.Configuration conf)

addSuffix

public static String addSuffix(String key,
                               String suffix)

Add non empty and non null suffix to a key