kfaraz opened a new pull request, #19697:
URL: https://github.com/apache/druid/pull/19697
### Changes
- Add config to skip scaling if cost drop percentage is less than a
threshold.
This would help prevent the autoscaler from flapping. This is a temporary
fix until we have stabilized the cost function.
- Add metrics for current cost and optimal cost in `CostBasedAutoScaler`.
These would help identify the cost difference between the current and
optimal cost values when the auto-scaler chooses one task count over another.
<hr>
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- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.
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