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

["Miklos Gergely (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-20807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Miklos Gergely updated HIVE-20807:
----------------------------------
    Attachment: HIVE-20807.01.patch

> 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
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-20807.01.patch
>
>
> 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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