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From "Pankaj (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-16298) Manage/Renew delegation tokens for externally scheduled jobs
Date Mon, 06 May 2019 22:51:00 GMT
Pankaj created HADOOP-16298:

             Summary: Manage/Renew delegation tokens for externally scheduled jobs
                 Key: HADOOP-16298
                 URL: https://issues.apache.org/jira/browse/HADOOP-16298
             Project: Hadoop Common
          Issue Type: Improvement
          Components: common
    Affects Versions: 3.2.0, 2.9.0, 2.7.3, 3.3.0
            Reporter: Pankaj
             Fix For: 3.3.0, 3.2.0, 2.9.0, 2.7.3
         Attachments: Proposal for changes to UGI for managing_renewing externally managed
delegation tokens.pdf

* Presently when jobs are run in the Hadoop ecosystem, the implicit assumption is that YARN
will be used as a scheduling agent with access to appropriate keytabs for renewal of kerberos
tickets and delegation tokens. 
 * Jobs that interact with kerberized hadoop services such as hbase/hive/hdfs and use an external
scheduler such as Kubernetes, typically do not have access to keytabs. In such cases, delegation
tokens are a logical choice for interacting with a kerberized cluster. These tokens are issued
based on some external auth mechanism (such as Kube LDAP authentication).

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