Write

General

The General tab has the following fields.

Field	Module Property?	Description
Name	No	The name of the activity in the process definition.
HDFS Connection	Yes	Click to select an HDFS Connection shared resource. If no matching HDFS Connection shared resources are found, click Create Shared Resource to create one.
Append	No	Specifies whether to append the data to an existing file. Note: Data cannot be appended to the same file in HDFS by multiple processes simultaneously.
Write Type	No	Specifies the format of the data to be written. text binary file StreamObject
Overwrite	Yes	Specifies whether to overwrite the existing data in the specified file. Note: This field is displayed when the Append check box is cleared.

Description

Provide a short description for the activity.

Input

The input of this activity varies depending on the data format you chose in the General tab. The following table specifies the possible input of the activity.

Input Item	Data Type	Description
fileName	string	Specifies the path of the file to be written in.
fileContent	string	Specifies the content to be written in the file. Note: This field is displayed when text is selected in the Write Type field in the General tab.
binaryData	base64 Binary	Specifies the binary data to be written in the file. Note: This field is displayed when binary is selected in the Write Type field in the General tab.
sourceFile Path	string	Specifies the path of the file to be written. Note: This field is displayed when file is selected in the Write Type field in the General tab.
inputStream Object	Object	Specifies the streaming object to be written. Note: This field is displayed when StreamObject is selected in the Write Type field in the General tab.
overwrite	boolean	Specifies whether to overwrite the existing data in the source file.
blockSize	long	Specifies the block size of the file. The value in this field must be greater than 0.
replication	short	Specifies the number of replications of the file. The value in this field must be greater than 0.
permission	integer	Specifies the permission of the file. The value in this field must be in the range 0 to 777.
buffersize	integer	Specifies the size of the buffer used in transferring data. The value in this field must be greater than 0.

Output

The output of the activity are as follows.

Output Item	Data Type	Description
status	integer	Returns standard HTTP status code to indicate whether the execution has succeeded or not.
msg	string	Returns the execution message.

Fault

The Fault tab lists the exceptions that can be thrown by this activity.

HDFSException	Description
msg	The error message description returned by the plug-in.
msgCode	The error code returned by the plug-in.
exception	Occurs when the plug-in has internal errors.
message	The error message returned by the server.
javaClassName	The name of the Java Class where an error occurred.