Barun Kumar created LENS-1514:
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             Summary: Support HDFS delegation token suthentication
                 Key: LENS-1514
                 URL: https://issues.apache.org/jira/browse/LENS-1514
             Project: Apache Lens
          Issue Type: Improvement
          Components: client, server
            Reporter: Barun Kumar
            Assignee: Barun Kumar


As part of LENS-1509, we have added Spnego authentication based on Kerberos to 
lens. This will work in client-server mode. But this approach will cease to 
work in a hadoop cluster in which user is using lens client in a mapred 
job(such as oozie java action) since there will not be keytabs in the hadoop 
cluster. The authentication in hadoop work on concept of delegation 
token([https://blog.cloudera.com/blog/2017/12/hadoop-delegation-tokens-explained/).]

Here we are introducing delegation token auth in lens. We are piggybacking on 
HDFS to do authentication by passing it's token and performing a filesystem 
operation.

 

We will add proper delegation token implementation as future improvement.

 



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