Hadoop Jobs - javax.security.sasl.SaslException: GSS initiate failed

If you see below exception while running Big Data Jobs - Spark, MR, Tez, etc.

WARNING: YARN_OPTS has been replaced by HADOOP_OPTS. Using value of YARN_OPTS.

javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]

Caused by: GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)

javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]

Caused by: GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)

javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]

Solution - The simplest way is to generate kerberos Keytab & initialize same in a user session before running job -

Ex - kinit -k -t /home/<User_name>/*.keytab

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