pranavbhole opened a new pull request, #15598:
URL: https://github.com/apache/druid/pull/15598
### Description
In case of the first version of the lookup, we can skip waiting for
initialization where it is good or bad configuration and just load it as it is.
Esp for MSQ workers, it get spin off for each tasks, and issues loadNotice with
no previous lookup version.
In subsequent version of the same lookup, we always make sure that we wait
until new lookup config is loaded with cache before we kill the old working
lookup.
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.
- [ ] a release note entry in the PR description.
- [ ] 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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