Submitting a MapReduce Job

Scenario

This section describes how to submit an Oozie job of the MapReduce type on the Hue web UI.

Procedure

1. Create a workflow. For details, see Creating a Workflow.
2. On the workflow editing page, select next to MapReduce job and drag it to the operation area.
3. In the MapReduce job window that is displayed, set Jar name to a value, for example, /user/admin/examples/apps/map-reduce/lib/oozie-examples-xxx.jar (xxx indicates the JAR file version, which varies depending on the actual environment). Click Add.
4. Click PROPERTIES+ to add input and output properties.

   

   For example, set the value of mapred.input.dir to /user/admin/examples/input-data/text and set the value of mapred.output.dir to /user/admin/examples/output-data/map-reduce_workflow.

5. Click the configuration button in the upper right corner. On the configuration page that is displayed, click Delete + to delete a directory, for example, /user/admin/examples/output-data/map-reduce_workflow.
6. Click in the upper right corner of the Oozie editor.

   If you need to modify the job name before saving the job (default value: My Workflow), click the name directly for modification, for example, MapReduce-Workflow.

7. After the configuration is saved, click , and submit the job.

   After the job is submitted, you can view the related contents of the job, such as the detailed information, logs, and processes, on Hue.