jihoonson opened a new pull request #12095:
URL: https://github.com/apache/druid/pull/12095


   ### Description
   
   Currently, our integration test uses maven to pull in dependencies for some 
extensions instead of Druid's extension loading system. The discrepancy in how 
Druid loads extension dependencies between in production and in integration 
tests makes our integration tests less trust-able. This PR fixes it to use 
Druid's extension system for every extension. 
   
   This PR also cleans up a bit how integration test configuration system 
works. 
   
   - Before this PR, some integration tests use a fixed loadList that is set in 
`setupData` in `druid.sh`. This loadList is not overrideable which is confusing 
and also hard to debug. This PR removes the fixed loadList.
   - This PR also removes unnecessary docker compose settings for 
`custom-coordinator-duties` and `shuffle-deep-store` groups. The docker compose 
setting should be used only when the test group requires for extra nodes to run 
besides the default nodes defined in `docker-compose.yml` or 
`docker-compose.override-env.yml`.
   
   <hr>
   
   ##### Key changed/added classes in this PR
    * `copy_resources_template.sh`
    * `druid.sh`
   
   <hr>
   
   <!-- Check the items by putting "x" in the brackets for the done things. Not 
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   This PR has:
   - [ ] been self-reviewed.
      - [ ] using the [concurrency 
checklist](https://github.com/apache/druid/blob/master/dev/code-review/concurrency.md)
 (Remove this item if the PR doesn't have any relation to concurrency.)
   - [ ] added documentation for new or modified features or behaviors.
   - [ ] added Javadocs for most classes and all non-trivial methods. Linked 
related entities via Javadoc links.
   - [ ] added or updated version, license, or notice information in 
[licenses.yaml](https://github.com/apache/druid/blob/master/dev/license.md)
   - [ ] added comments explaining the "why" and the intent of the code 
wherever would not be obvious for an unfamiliar reader.
   - [ ] added unit tests or modified existing tests to cover new code paths, 
ensuring the threshold for [code 
coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md)
 is met.
   - [ ] added integration tests.
   - [ ] been tested in a test Druid cluster.
   


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