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Posted to dev@hive.apache.org by "Miklos Gergely (JIRA)" <ji...@apache.org> on 2018/10/25 13:57:00 UTC

[jira] [Created] (HIVE-20807) Refactor LlapStatusServiceDriver

Miklos Gergely created HIVE-20807:
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             Summary: Refactor LlapStatusServiceDriver
                 Key: HIVE-20807
                 URL: https://issues.apache.org/jira/browse/HIVE-20807
             Project: Hive
          Issue Type: Improvement
          Components: Hive
    Affects Versions: 4.0.0
            Reporter: Miklos Gergely
            Assignee: Miklos Gergely
             Fix For: 4.0.0


LlapStatusServiceDriver is the class used to determine if LLAP has started. The following problems should be solved by refactoring:

1. The main class is more than 800 lines long,should be cut into multiple smaller classes.
2. The current design makes it extremely hard to write unit tests.
3. There are some overcomplicated, over-engineered parts of the code.
4. Most of the code is under org.apache.hadoop.hive.llap.cli, but some parts are under org.apache.hadoop.hive.llap.cli.status. The whole program could be moved to the latter.
5. LlapStatusHelpers serves as a class for holding classes, which doesn't make much sense.



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