[jira] [Created] (FLINK-8270) TaskManagers do not use correct local path for shipped Keytab files in Yarn deployment modes

[Shang Yuanchun (Jira)]

Tzu-Li (Gordon) Tai created FLINK-8270:
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             Summary: TaskManagers do not use correct local path for shipped Keytab files in Yarn deployment modes
                 Key: FLINK-8270
                 URL: https://issues.apache.org/jira/browse/FLINK-8270
             Project: Flink
          Issue Type: Bug
          Components: Security
    Affects Versions: 1.4.0
            Reporter: Tzu-Li (Gordon) Tai
            Priority: Blocker
             Fix For: 1.5.0, 1.4.1


Reported on ML: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Flink-1-4-0-keytab-is-unreadable-td17292.html

This is a "recurrence" of FLINK-5580. The TMs in Yarn deployment modes are again not using the correct local paths for shipped Keytab files.

The cause was accidental due to this change: https://github.com/apache/flink/commit/7f1c23317453859ce3b136b6e13f698d3fee34a1#diff-a81afdf5ce0872836ac6fadb603d483e.

Things to consider:
1) The above accidental breaking change was actually targeting a minor refactor on the "integration test scenario" code block in {{YarnTaskManagerRunner}}. It would be best if we can remove that test case code block from the main code.
2) Unit test coverage is apparently not enough. As this incidence shows, any slight changes can cause this issue to easily resurface again.



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