org.apache.nifi.hadoop

Class KerberosTicketRenewer

java.lang.Object

org.apache.nifi.hadoop.KerberosTicketRenewer

All Implemented Interfaces:

Runnable

public class KerberosTicketRenewer
extends Object
implements Runnable

Periodically attempts to renew the Kerberos user's ticket for the given UGI. This class will attempt to call ugi.checkTGTAndReloginFromKeytab() which will re-login the user if the ticket expired or is close to expiry. Between relogin attempts this thread will sleep for the provided amount of time.

Field Summary

Fields

Modifier and Type	Field and Description
private ComponentLog	logger
private long	renewalPeriod
private boolean	stopped
private org.apache.hadoop.security.UserGroupInformation	ugi

Constructor Summary

Constructors

Constructor and Description
KerberosTicketRenewer(org.apache.hadoop.security.UserGroupInformation ugi, long renewalPeriod, ComponentLog logger)

Method Summary

Modifier and Type	Method and Description
void	run()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

ugi

private final org.apache.hadoop.security.UserGroupInformation ugi

renewalPeriod

private final long renewalPeriod

logger

private final ComponentLog logger

stopped

private volatile boolean stopped

Constructor Detail

KerberosTicketRenewer

public KerberosTicketRenewer(org.apache.hadoop.security.UserGroupInformation ugi,
                             long renewalPeriod,
                             ComponentLog logger)

Parameters:

ugi - the user to renew the ticket for

renewalPeriod - the amount of time in milliseconds to wait between renewal attempts

logger - the logger from the component that started the renewer

Method Detail

run

public void run()

Specified by:

run in interface Runnable

stop

public void stop()