Superusers (Apache HBase 1.4.11 API)

java.lang.Object
- org.apache.hadoop.hbase.security.Superusers

```
@InterfaceAudience.Private
public final class Superusers
extends Object
```
Keeps lists of superusers and super groups loaded from HBase configuration, checks if certain user is regarded as superuser.

Field Summary

Fields
Modifier and Type Field and Description

static String SUPERUSER_CONF_KEY
Configuration key for superusers

Fields
Modifier and Type	Field and Description
`static String`	`SUPERUSER_CONF_KEY` Configuration key for superusers

Method Summary

Methods
Modifier and Type	Method and Description
`static List<String>`	`getSuperUsers()`
`static User`	`getSystemUser()`
`static void`	`initialize(org.apache.hadoop.conf.Configuration conf)` Should be called only once to pre-load list of super users and super groups from Configuration.
`static boolean`	`isSuperUser(String user)` Deprecated. this method is for backward compatibility, use `isSuperUser(User)` instead
`static boolean`	`isSuperUser(User user)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - SUPERUSER_CONF_KEY
```
public static final String SUPERUSER_CONF_KEY
```
    Configuration key for superusers
    
    See Also:
    Constant Field Values
- Method Detail
  - initialize
```
public static void initialize(org.apache.hadoop.conf.Configuration conf)
                       throws IOException
```
    Should be called only once to pre-load list of super users and super groups from Configuration. This operation is idempotent.
    
    Parameters:
    conf - configuration to load users from
    
    Throws:
    
    IOException - if unable to initialize lists of superusers or super groups
    
    IllegalStateException - if current user is null
  - isSuperUser
```
public static boolean isSuperUser(User user)
```
    Parameters:
    user - to check
    
    Returns:
    true if current user is a super user (whether as user running process, declared as individual superuser or member of supergroup), false otherwise.
    
    Throws:
    
    IllegalStateException - if lists of superusers/super groups haven't been initialized properly
  - isSuperUser
```
@Deprecated
public static boolean isSuperUser(String user)
```
    Deprecated. this method is for backward compatibility, use isSuperUser(User) instead
    
    Parameters:
    user - to check
    
    Returns:
    true if current user is a super user (whether as user running process, or declared as superuser in configuration), false otherwise.
    
    Throws:
    
    IllegalStateException - if lists of superusers/super groups haven't been initialized properly
  - getSuperUsers
```
public static List<String> getSuperUsers()
```
  - getSystemUser
```
public static User getSystemUser()
```

Class Superusers

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SUPERUSER_CONF_KEY

Method Detail

initialize

isSuperUser

isSuperUser

getSuperUsers

getSystemUser