[jira] [Created] (TEZ-1920) Security for long running sessions

[Bikas Saha (JIRA)]

Bikas Saha created TEZ-1920:
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             Summary: Security for long running sessions
                 Key: TEZ-1920
                 URL: https://issues.apache.org/jira/browse/TEZ-1920
             Project: Apache Tez
          Issue Type: Sub-task
            Reporter: Bikas Saha


Tokens (HDFS) expire after 7 days. The AM/TezSession caches HDFS tokens and 
reuses them across DAGs. These tokens expire after 7 days (typically) and after 
that the session would not be able to access HDFS.



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