How to collect Yarn logs from failing job

Directions for collecting YARN logs from a specific failing job:

1.  Access the Ambari Dashboard (http://<FQDN_AmbariMachine:8080)

2. Click on YARN from the left hand side of the screen

3.  AT the top of the screen click Quick Links

4.  Click Resource Manager UI

5.  From here, copy the application id name of the job that is failing

6.  From the Master node, run the following command replacing the application_id with the one copied.  Be sure you copied the entire number including the application_id at the beginning of  the identifier

sudo -u yarn yarn logs --applicationId app_id_goes_here > outputfile.log

7.  Collect the file created and send to support as requested.