findingrish opened a new pull request, #15355:
URL: https://github.com/apache/druid/pull/15355
In pull request #14985, a bug was introduced where periodic refresh would
skip rebuilding a datasource's schema after encountering a non-existent
datasource. This resulted in remaining datasources having stale schema
information.
This change addresses the bug and introduces a unit test to validate the
refresh mechanism's behaviour when a datasource is removed, and other
datasources have schema changes.
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.
- [ ] 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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