Setting file system credentials for Oozie through hadoop properties using Hue Editor

This option allows you to configure additional Oozie credentials with configuration properties. The following example shows how to set up an Oozie workflow with a shell action which uses additional file system credentials.

1. In Hue web UI, click Scheduler > Workflow to create a new workflow.
2. Click Documents and select Actions in the drop-down list.
3. Select the Shell icon to the workflow to add a shell action. The shell command can be echo and its parameter can be Hello world for this example.
   
4. Select the settings under the Edit menu to add properties to the workflow. The Workflow Settings dialog box is displayed.
   
5. In the Workflow Settings dialog box, under the Hadoop Properties section, click + Add property and add the necessary credentials. The property name must be in the format similar to oozie.action.credentials.filesystem.<myCustomCredential> where myCustomCredential is the description of the credential. The value of this property must be set to a valid filesystem URI, for example, an S3 bucket URL. Click + Add property to add additional properties if you want to access more than one s3 bucket, and so on, as shown in the below figure.
   
6. Click Action Settings to set the credential defined in the previous step to use it in the workflow action where it is needed.
   
7. Add a new property to the action with the name oozie.action.credentials.filesystem and its value must be a comma-separated list of credential names defined in the hadoop properties. For example “myCustomCredential,myOtherCustomCredential”. Based on this property, Oozie requests delegation tokens for the file-systems defined in the given credentials.
   

Now the workflow is ready to be submitted and the following is the generated workflow.xml file.