org.apache.hadoop.hive.ql.exec.tez

Interface DagCredentialSupplier

@InterfaceAudience.Private
public interface DagCredentialSupplier

A supplier of credentials for Tez dags.

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.io.Text	getTokenAlias() Returns the alias for tokens obtained by this supplier.
org.apache.hadoop.security.token.Token<?>	obtainToken(BaseWork work, Set<TableDesc> tables, org.apache.hadoop.conf.Configuration conf) Obtains a token for the specified unit of work, tables, and configuration.

Method Detail

obtainToken

org.apache.hadoop.security.token.Token<?> obtainToken(BaseWork work,
                                                      Set<TableDesc> tables,
                                                      org.apache.hadoop.conf.Configuration conf)

Obtains a token for the specified unit of work, tables, and configuration.

Returns:

a valid token or null if such token cannot be supplied.

getTokenAlias

org.apache.hadoop.io.Text getTokenAlias()

Returns the alias for tokens obtained by this supplier.

It returns always the same value and never null.

Returns:

the alias for tokens obtained by this supplier.