This section applies to MRS clusters earlier than 3.x.
The process for migrating user data with Loader is as follows:
The Loader page is a graphical data migration management tool based on the open source Sqoop web UI and is hosted on the Hue web UI. Perform the following operations to access the Loader page:
The job management tab page is displayed by default on the Loader page.
Loader links save data location information. Loader uses links to access data or save data to the specified location. Perform the following operations to access the Loader link management page:
The Loader link management page is displayed.
Click Manage jobs to return to the job management page.
Loader jobs are used to manage data migration tasks. Each job consists of a source data link and a destination data link. A job reads data from the source link and saves data to the destination link to complete a data migration task.