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https://issues.apache.org/jira/browse/HIVE-20807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16678508#comment-16678508
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Miklos Gergely commented on HIVE-20807:
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[~sershe] could you please review the changes?
> 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, HIVE-20807.02.patch,
> HIVE-20807.03.patch, HIVE-20807.04.patch, HIVE-20807.05.patch,
> HIVE-20807.06.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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