[jira] [Created] (FALCON-2025) Periodic revalidation of kerberos credentials should be done on loginUser

["Balu Vellanki (JIRA)" <ji...@apache.org>]

Balu Vellanki created FALCON-2025:
-------------------------------------

             Summary: Periodic revalidation of kerberos credentials should be done on loginUser
                 Key: FALCON-2025
                 URL: https://issues.apache.org/jira/browse/FALCON-2025
             Project: Falcon
          Issue Type: Bug
            Reporter: Balu Vellanki
            Assignee: Balu Vellanki
             Fix For: trunk, 0.10


For some users, Falcon server fails to perform any operations on workflow engine after the kerberos credentials expire. Falcon server periodically revalidates the credentials from keytab saying ugi.checkTGTAndReloginFromKeytab(), but this operation will not work when ugi belongs to proxy user. The relogin should be done on UserGroupInformation.getLoginUser() for the falcon credentials to be renewed. 

The error looks as follows.
{code}
falcon instance -list -type process -name procName 
log4j:WARN No appenders could be found for logger (org.apache.hadoop.security.authentication.client.KerberosAuthenticator). 
log4j:WARN Please initialize the log4j system properly. 
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. 
ERROR: Bad Request;default/org.apache.falcon.FalconWebException::org.apache.falcon.FalconException: java.io.IOException: Failed on local exception: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]; Host Details : local host is: "machine.test.group/<IP Addr>"; destination host is: "machine.test.group":8020; 
{code} 



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