Hai Lu created BEAM-7190:
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             Summary: enable file system based token authentication for 
portable runner
                 Key: BEAM-7190
                 URL: https://issues.apache.org/jira/browse/BEAM-7190
             Project: Beam
          Issue Type: Task
          Components: runner-samza
            Reporter: Hai Lu
            Assignee: Hai Lu


For Samza and potentially other portable runners, there is a need to secure the 
communication between sdk worker and runner. Currently the SSL/TLS in 
portability is half done.

However, after investigation we found that it's sufficient to just 1) use 
loopback address 2) enforce authentication and that way the communication is 
both authenticated and secured.

This ticket intends to track the implementation of the solution above. More 
details can be found in the following PR.



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