Read From Hive File
Related task:
Connecting to Hadoop: To be able to use Read from Hive File stage, you need to create a connection to the Hadoop file server. Once you do that, the name by which you save the connection is displayed as the server name.
File Properties tab
Fields | Description |
---|---|
Server | Indicates the file you select in the File name field is
located on the Hadoop system. Note: You need to create a connection to the Hadoop
file server before using it here. For details on creating connection, see Connecting to Hadoop. If you select a file on the Hadoop system, the server name will be the
name you specify while creating a file server. |
File name | Specifies the path to the file. Click the ellipses button (...) to browse to
the file you want. Note: The schema of an input file is imported as soon as you
browse to the correct location and select the file. This imported schema cannot be
edited. The first 50 records of the file are fetched in the
Preview grid on selecting the file.You may, however, rename the columns of the schema as required. |
File type | Select the type of the file being read:
|
Note: In case of RC files, to generate the Preview, define the schema in the
Fields tab and then click Preview in the
File Properties tab.
Fields tab
The Fields tab defines the names, datatypes, positions of the fields as present in the input file, as well as the user-given names for the fields. For more information, see Defining Fields for Reading from Hive File.