Package org.apache.hadoop.hdfs.server.namenode.ha

Class BootstrapStandby

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

@Private
public class BootstrapStandby
extends java.lang.Object
implements org.apache.hadoop.util.Tool, org.apache.hadoop.conf.Configurable

Tool which allows the standby node's storage directories to be bootstrapped by copying the latest namespace snapshot from the active namenode. This is used when first configuring an HA cluster.

Constructor Summary

Constructors

Constructor	Description
BootstrapStandby()

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.conf.Configuration	getConf()
NamespaceInfo	getProxyNamespaceInfo(NamenodeProtocol proxy)
int	run(java.lang.String[] args)
static int	run(java.lang.String[] argv, org.apache.hadoop.conf.Configuration conf)
void	setConf(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class java.lang.Object

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

Constructor Detail

BootstrapStandby

public BootstrapStandby()

Method Detail

run

public int run(java.lang.String[] args)
        throws java.lang.Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

java.lang.Exception

getProxyNamespaceInfo

@VisibleForTesting
public NamespaceInfo getProxyNamespaceInfo(NamenodeProtocol proxy)
                                    throws java.io.IOException

Throws:

java.io.IOException

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

getConf

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

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable

run

public static int run(java.lang.String[] argv,
                      org.apache.hadoop.conf.Configuration conf)
               throws java.io.IOException

Throws:

java.io.IOException