URL Property

The URL of the Hadoop WebHDFS server.

Syntax

 hadoopdfs.getURL([callback])
 hadoopdfs.setURL( URL, [callback])

Default Value

""

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for the getURL([callback]) method is defined as:

function(err, data){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'data' is the value returned by the method.

The callback for the setURL([callback]) method is defined as:

function(err){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

This property specifies the URL of the Hadoop WebHDFS server to make requests against.

A full WebHDFS URL looks like http[s]://<HOST>:<PORT>/webhdfs/v1. Anytime this property is set to a non-empty string, the class will automatically append /webhdfs/v1 to its value (if necessary).

The class automatically detects whether to secure the connection using SSL/TLS based on whether the URL begins with http (not secured) or https (secured).

This property is not available at design time.

Data Type

String