org.apache.hadoop.hdfs.tools

类 DelegationTokenFetcher

java.lang.Object

org.apache.hadoop.hdfs.tools.DelegationTokenFetcher

public class DelegationTokenFetcher
extends Object

Fetch a DelegationToken from the current Namenode and store it in the specified file.

构造器概要

构造器

构造器和说明
DelegationTokenFetcher()

方法概要

方法

限定符和类型	方法和说明
static void	cancelDelegationToken(String protocol, InetSocketAddress addr, Token<DelegationTokenIdentifier> tok, Configuration conf) Cancel a Delegation Token.
static Credentials	getDTfromRemote(String protocol, InetSocketAddress nnAddr, String renewer, Configuration conf) Utility method to obtain a delegation token over http
protected static String	getRenewAddress(String protocol, InetSocketAddress addr, Configuration conf) Get the URI that we use for getting, renewing, and cancelling the delegation token.
static void	main(String[] args) Command-line interface
static long	renewDelegationToken(String protocol, InetSocketAddress addr, Token<DelegationTokenIdentifier> tok, Configuration conf) Renew a Delegation Token.
static void	setupSsl(Configuration conf) Set up SSL resources

从类继承的方法 java.lang.Object

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

构造器详细资料

DelegationTokenFetcher

public DelegationTokenFetcher()

方法详细资料

main

public static void main(String[] args)
                 throws Exception

Command-line interface

抛出:

Exception

setupSsl

public static void setupSsl(Configuration conf)

Set up SSL resources

getDTfromRemote

public static Credentials getDTfromRemote(String protocol,
                          InetSocketAddress nnAddr,
                          String renewer,
                          Configuration conf)
                                   throws IOException

Utility method to obtain a delegation token over http

参数:

protocol - whether to use http or https

nnAddr - the address for the NameNode

renewer - User that is renewing the ticket in such a request

conf - the configuration

抛出:

IOException

getRenewAddress

protected static String getRenewAddress(String protocol,
                     InetSocketAddress addr,
                     Configuration conf)

Get the URI that we use for getting, renewing, and cancelling the delegation token. For KSSL with hftp that means we need to use https and the NN's https port.

renewDelegationToken

public static long renewDelegationToken(String protocol,
                        InetSocketAddress addr,
                        Token<DelegationTokenIdentifier> tok,
                        Configuration conf)
                                 throws IOException

Renew a Delegation Token.

参数:

protocol - The protocol to renew over (http or https)

addr - the address of the NameNode

tok - the token to renew

conf - the configuration

返回:

the Date that the token will expire next.

抛出:

IOException

cancelDelegationToken

public static void cancelDelegationToken(String protocol,
                         InetSocketAddress addr,
                         Token<DelegationTokenIdentifier> tok,
                         Configuration conf)
                                  throws IOException

Cancel a Delegation Token.

参数:

nnAddr - the NameNode's address

tok - the token to cancel

抛出:

IOException