hdfsConnection (Variable type)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

This content has been translated automatically. Click here to view the French version.

Help / WLanguage / Managing databases / Big Data / HDFS system

Properties specific to hdfsConnection variables
WLanguage functions that use the hdfsConnection type

WINDEV

WEBDEV

WINDEV Mobile

Others

See also

hdfsConnection (Variable type)

In french: hdfsConnexion

The hdfsConnection type is used to define the advanced characteristics of a connection to the Hadoop file system (HDFS). You can define and change the characteristics of this connection using different WLanguage properties.

Note: For more details on the declaration of this type of variable and the use of WLanguage properties, see Declaring a variable.

Example

// Connexion
MaConnexion is hdfsConnection
MaConnexion.namenode = "MonServeur"
MaConnexion.User = "Admin"
IF hdfsOpenConnection(MaConnexion) = False THEN
	Error(ErrorInfo())
END

Properties

Properties specific to hdfsConnection variables

The following properties can be used to handle a connection:

Property name	Type used	Effect

namenode	Character string	DNS name or IP address of "Name Node" (server) of Hadoop cluster.
User	Character string	Username.

Note These properties can be used using one of two syntaxes:

Remarks

WLanguage functions that use the hdfsConnection type

Standard syntax:


hdfsCloseConnection	Closes a connection to a Hadoop server.
hdfsCopyFrom	Copies a file found on a Hadoop server to the local computer.
hdfsCopyTo	Copies a file located on the local machine to a Hadoop server.
hdfsCreateDirectory	Creates a directory on a Hadoop server.
hdfsDelete	Deletes a file or directory from a Hadoop server.
hdfsList	Lists the content of a directory found on a Hadoop server.
hdfsOpenConnection	Opens a connection to a Hadoop server.
hdfsRename	Renames a file or a directory found on a Hadoop server.

prefix syntax:


<hdfsConnection variable>.CloseConnection	Closes a connection to a Hadoop server.
<hdfsConnection variable>.CopyFrom	Copies a file found on a Hadoop server to the local computer.
<hdfsConnection variable>.CopyTo	Copies a file located on the local machine to a Hadoop server.
<hdfsConnection variable>.CreateDirectory	Creates a directory on a Hadoop server.
<hdfsConnection variable>.Delete	Deletes a file or directory from a Hadoop server.
<hdfsConnection variable>.List	Lists the content of a directory found on a Hadoop server.
<hdfsConnection variable>.OpenConnection	Opens a connection to a Hadoop server.
<hdfsConnection variable>.Rename	Renames a file or a directory found on a Hadoop server.