[GitHub] [druid] himanshug opened a new pull request #11205: kubernetes-druid-discovery-extension: stress-test overlord/coordinator leadership changes

[GitBox <gi...@apache.org>]

himanshug opened a new pull request #11205:
URL: https://github.com/apache/druid/pull/11205


   Fixes #10542
   
   #10669 introduced the travis build that does data ingestion and querying on a zookeeper-less cluster using kubernetes druid extention. this patch adds another build that stress tests the leader election by repeatedly restarting coordinator/overlor and forcing leadership changes when kubernetes druid extension is used. this is a follow-up on #10680 .
   
   In the process kubernetes java client dependency version is also updated to pull changes related to leader election improvements.
   
   
   This PR has:
   - [x] 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.
   - [x] added integration tests.
   - [ ] been tested in a test Druid cluster.
   


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