We will be using job. Basically, we will pass the location of this file to Oozie client while launching the job. The location of workflow XML that contains the actual Oozie workflow is mentioned in this config file. This config file contains one key-value pair of settings or configuration in it. You can just take a look the contents of the file using: cat job. This folder contains the jar file that contains the classes having map-reduce logic.
Take a look at the list of files in lib using ls lib. These are the main workflow files. We will be using workflow. It should look something like this:. If you go through it you would understand that here we are defining the workflow - which commands to execute, in what order and what to do if it fails.
Further, in a real-life project, you might have to use a different queueName as configured by your sysadmin. It might take about 2 minutes. Mapper class is org. It passes whatever it gets as key-value. By default, the mapper gets the byte-location of each line as key and the content of line as the value. Reducer class is org. So, it might just print the location of each line in the file. But with this example, the main objective is that you should be able to schedule your own Map-reduce job using Oozie.
It should show something like this:. If you want to kill all the jobs listed using the 'jobs' command, you can add '-kill' in the end.
You can see the documentation of oozie here: Oozie Command line Documentation. Login to CloudxLab Linux console. Copy Oozie examples to your home directory in the console. Extract files from tar. Copy the examples directory to HDFS and run the job using the command displayed on the screen. Press enter. We will get the job id in the command prompt. To check the status of job type command displayed on the screen. Job-status is "Running".
Want to create exercises like this yourself? Click here. View all events. Toggle navigation. OozieClient; import org. Oozie provides a embedded Oozie implementation, LocalOozie , which is useful for development, debugging and testing of workflow applications within the convenience of an IDE.
The code snipped below shows the usage of the LocalOozie class. The examples bundled with Oozie include the complete and running class, LocalOozieExample from where this snipped was taken. LocalOozie; import org. Last Published: Local Oozie Example Oozie provides a embedded Oozie implementation, LocalOozie , which is useful for development, debugging and testing of workflow applications within the convenience of an IDE.
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