Driver timeout and deployment errors with AEL on secured clusters

You may receive driver timeout and web socket deployment error messages when running Spark with AEL on a secured cluster.

Before trying to address any issues while running Spark with AEL on a secured cluster, verify the following:

• The cluster has been secured by your cluster administrator.
• The user associated with the AEL daemon has a valid Kerberos certificate.

If the expiration date and time returned by the klist command is less than the date and time returned by the date command, you must obtain a new ticket by using the kinit command. Contact your cluster administrator to determine what kinit approach was set up on your system.