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From "Shen Yinjie (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-7425) Failed to renew delegation token when RM user's TGT is expired
Date Wed, 01 Nov 2017 09:36:00 GMT
Shen Yinjie created YARN-7425:

             Summary: Failed to renew delegation token  when RM user's TGT is expired
                 Key: YARN-7425
                 URL: https://issues.apache.org/jira/browse/YARN-7425
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn
    Affects Versions: 2.8.2
            Reporter: Shen Yinjie
            Priority: Critical

we have a secure hadoop cluster with namenode federation.
submit job fails after kerberos TGT maxLifeTime expired(default 24h), client log shows" failed
to renew token: HDFS_DELEGATION_TOKEN...".
check rm log, found rm tgt is expired but not triggers relogin(),just retry and fail...
(some logs see screenshots)
digging in code:
when rm tries to renewToken(),
but UserGroupInformation.getCurrentUser()="testUser".
this causes Client.shouldAuthenticateOverKrb() returns false, thus cant trigger reloginFromKeytab()
or reloginFromTicketCache().

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