Constructor Detail

• User.SecureHadoopUser

  public User.SecureHadoopUser()
                        throws IOException

  Throws:

  IOException

• User.SecureHadoopUser

  public User.SecureHadoopUser(org.apache.hadoop.security.UserGroupInformation ugi)

• User.SecureHadoopUser

  public User.SecureHadoopUser(org.apache.hadoop.security.UserGroupInformation ugi,
                       com.google.common.cache.LoadingCache<String,String[]> cache)

Method Detail

• getShortName

  public String getShortName()

  Description copied from class: User
  Returns the shortened version of the user name -- the portion that maps to an operating system user name.

  Specified by:

  getShortName in class User

  Returns:

  Short name

• getGroupNames

  public String[] getGroupNames()

  Description copied from class: User
  Returns the list of groups of which this user is a member. On secure Hadoop this returns the group information for the user as resolved on the server. For 0.20 based Hadoop, the group names are passed from the client.

  Overrides:

  getGroupNames in class User

• runAs

  public <T> T runAs(PrivilegedAction<T> action)

  Description copied from class: User
  Executes the given action within the context of this user.

  Specified by:

  runAs in class User

• runAs

  public <T> T runAs(PrivilegedExceptionAction<T> action)
          throws IOException,
                 InterruptedException

  Description copied from class: User
  Executes the given action within the context of this user.

  Specified by:

  runAs in class User

  Throws:

  IOException

  InterruptedException

• obtainAuthTokenForJob

  public void obtainAuthTokenForJob(org.apache.hadoop.conf.Configuration conf,
                           org.apache.hadoop.mapreduce.Job job)
                             throws IOException,
                                    InterruptedException

  Description copied from class: User
  Requests an authentication token for this user and stores it in the user's credentials.

  Specified by:

  obtainAuthTokenForJob in class User

  Throws:

  IOException

  InterruptedException

• obtainAuthTokenForJob

  public void obtainAuthTokenForJob(org.apache.hadoop.mapred.JobConf job)
                             throws IOException,
                                    InterruptedException

  Description copied from class: User
  Requests an authentication token for this user and stores it in the user's credentials.

  Specified by:

  obtainAuthTokenForJob in class User

  Throws:

  IOException

  InterruptedException

• createUserForTesting

  public static User createUserForTesting(org.apache.hadoop.conf.Configuration conf,
                          String name,
                          String[] groups)

  See Also:

  User.createUserForTesting(org.apache.hadoop.conf.Configuration, String, String[])

• login

  public static void login(org.apache.hadoop.conf.Configuration conf,
           String fileConfKey,
           String principalConfKey,
           String localhost)
                    throws IOException

  Obtain credentials for the current process using the configured Kerberos keytab file and principal.

  Parameters:

  conf - the Configuration to use

  fileConfKey - Configuration property key used to store the path to the keytab file

  principalConfKey - Configuration property key used to store the principal name to login as

  localhost - the local hostname

  Throws:

  IOException

  See Also:

  User.login(org.apache.hadoop.conf.Configuration, String, String, String)

• isSecurityEnabled

  public static boolean isSecurityEnabled()

  Returns the result of UserGroupInformation.isSecurityEnabled().