achadoop

24 Chapter 2 • HADOOP Procedure
HDFS Statement
AUTHDOMAIN=auth-domain
specifies the name of an authentication domain metadata object in order to connect to
the Hadoop server. The authentication domain references credentials (user ID and
password) without your having to explicitly specify the credentials. The auth-domain
name is case sensitive, and it must be enclosed in double quotation marks.
An administrator creates authentication domain definitions while creating a user
definition with the User Manager in SAS Management Console. The authentication
domain is associated with one or more login metadata objects that provide access to
the Hadoop server. The metadata objects are resolved by SAS calling the SAS
Metadata Server and returning the authentication credentials.
Requirement: The authentication domain and the associated login definition must
be stored in a metadata repository, and the metadata server must be running to
resolve the metadata object specification.
Interaction: If you specify AUTHDOMAIN=, do not specify USERNAME= and
PASSWORD=.
See: For more information about creating and using authentication domains, see the
discussion on credential management in the SAS Intelligence Platform: Security
Administration Guide.
OPTIONS=fileref | 'external-file'
identifies the Hadoop configuration file to use for the associated PROC statement.
The file must be an XML document.
fileref
specifies the SAS fileref that is assigned to the Hadoop configuration file. To
assign a fileref, use the FILENAME statement.
'external-file'
is the physical location of the XML document. Include the complete pathname
and the filename. Enclose the physical name in single or double quotation marks.
The maximum length is 200 characters.
PASSWORD=password
is the password for the user ID on the Hadoop server. The user ID and password are
added to the set of options that are identified by OPTIONS=.
Requirement: To specify PASSWORD=, you must also specify USERNAME=.
USERNAME='ID'
is an authorized user ID on the Hadoop server. The user ID and password are added
to the set of options that are identified by OPTIONS=.
VERBOSE
enables additional messages that are displayed on the SAS log. VERBOSE is a good
error diagnostic tool. If you receive an error message when you invoke SAS, you can
use this option to see whether you have an error in your system option specifications.
Submits HDFS (Hadoop Distributed File System) commands.
Restriction: The HDFS statement supports only one operation per invocation.
Example: “Example 1: Submitting HDFS Commands” on page 27