:doc:`DataSync <../../datasync>` / Client / update_location_hdfs

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update_location_hdfs
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.. py:method:: DataSync.Client.update_location_hdfs(**kwargs)

  

  Modifies the following configuration parameters of the Hadoop Distributed File System (HDFS) transfer location that you're using with DataSync.

   

  For more information, see `Configuring DataSync transfers with an HDFS cluster <https://docs.aws.amazon.com/datasync/latest/userguide/create-hdfs-location.html>`__.

  

  See also: `AWS API Documentation <https://docs.aws.amazon.com/goto/WebAPI/datasync-2018-11-09/UpdateLocationHdfs>`_  


  **Request Syntax**
  ::

    response = client.update_location_hdfs(
        LocationArn='string',
        Subdirectory='string',
        NameNodes=[
            {
                'Hostname': 'string',
                'Port': 123
            },
        ],
        BlockSize=123,
        ReplicationFactor=123,
        KmsKeyProviderUri='string',
        QopConfiguration={
            'RpcProtection': 'DISABLED'|'AUTHENTICATION'|'INTEGRITY'|'PRIVACY',
            'DataTransferProtection': 'DISABLED'|'AUTHENTICATION'|'INTEGRITY'|'PRIVACY'
        },
        AuthenticationType='SIMPLE'|'KERBEROS',
        SimpleUser='string',
        KerberosPrincipal='string',
        KerberosKeytab=b'bytes',
        KerberosKrb5Conf=b'bytes',
        AgentArns=[
            'string',
        ]
    )
    
  :type LocationArn: string
  :param LocationArn: **[REQUIRED]** 

    The Amazon Resource Name (ARN) of the source HDFS cluster location.

    

  
  :type Subdirectory: string
  :param Subdirectory: 

    A subdirectory in the HDFS cluster. This subdirectory is used to read data from or write data to the HDFS cluster.

    

  
  :type NameNodes: list
  :param NameNodes: 

    The NameNode that manages the HDFS namespace. The NameNode performs operations such as opening, closing, and renaming files and directories. The NameNode contains the information to map blocks of data to the DataNodes. You can use only one NameNode.

    

  
    - *(dict) --* 

      The NameNode of the Hadoop Distributed File System (HDFS). The NameNode manages the file system's namespace. The NameNode performs operations such as opening, closing, and renaming files and directories. The NameNode contains the information to map blocks of data to the DataNodes.

      

    
      - **Hostname** *(string) --* **[REQUIRED]** 

        The hostname of the NameNode in the HDFS cluster. This value is the IP address or Domain Name Service (DNS) name of the NameNode. An agent that's installed on-premises uses this hostname to communicate with the NameNode in the network.

        

      
      - **Port** *(integer) --* **[REQUIRED]** 

        The port that the NameNode uses to listen to client requests.

        

      
    

  :type BlockSize: integer
  :param BlockSize: 

    The size of the data blocks to write into the HDFS cluster.

    

  
  :type ReplicationFactor: integer
  :param ReplicationFactor: 

    The number of DataNodes to replicate the data to when writing to the HDFS cluster.

    

  
  :type KmsKeyProviderUri: string
  :param KmsKeyProviderUri: 

    The URI of the HDFS cluster's Key Management Server (KMS).

    

  
  :type QopConfiguration: dict
  :param QopConfiguration: 

    The Quality of Protection (QOP) configuration specifies the Remote Procedure Call (RPC) and data transfer privacy settings configured on the Hadoop Distributed File System (HDFS) cluster.

    

  
    - **RpcProtection** *(string) --* 

      The RPC protection setting configured on the HDFS cluster. This setting corresponds to your ``hadoop.rpc.protection`` setting in your ``core-site.xml`` file on your Hadoop cluster.

      

    
    - **DataTransferProtection** *(string) --* 

      The data transfer protection setting configured on the HDFS cluster. This setting corresponds to your ``dfs.data.transfer.protection`` setting in the ``hdfs-site.xml`` file on your Hadoop cluster.

      

    
  
  :type AuthenticationType: string
  :param AuthenticationType: 

    The type of authentication used to determine the identity of the user.

    

  
  :type SimpleUser: string
  :param SimpleUser: 

    The user name used to identify the client on the host operating system.

    

  
  :type KerberosPrincipal: string
  :param KerberosPrincipal: 

    The Kerberos principal with access to the files and folders on the HDFS cluster.

    

  
  :type KerberosKeytab: bytes
  :param KerberosKeytab: 

    The Kerberos key table (keytab) that contains mappings between the defined Kerberos principal and the encrypted keys. You can load the keytab from a file by providing the file's address.

    

  
  :type KerberosKrb5Conf: bytes
  :param KerberosKrb5Conf: 

    The ``krb5.conf`` file that contains the Kerberos configuration information. You can load the ``krb5.conf`` file by providing the file's address. If you're using the CLI, it performs the base64 encoding for you. Otherwise, provide the base64-encoded text.

    

  
  :type AgentArns: list
  :param AgentArns: 

    The Amazon Resource Names (ARNs) of the DataSync agents that can connect to your HDFS cluster.

    

  
    - *(string) --* 

    

  
  :rtype: dict
  :returns: 
    
    **Response Syntax**

    
    ::

      {}
      
    **Response Structure**

    

    - *(dict) --* 
  
  **Exceptions**
  
  *   :py:class:`DataSync.Client.exceptions.InvalidRequestException`

  
  *   :py:class:`DataSync.Client.exceptions.InternalException`

  