AmatyaAvadhanula opened a new pull request, #16369:
URL: https://github.com/apache/druid/pull/16369
All the streaming ingestion tasks for a given datasource share the same lock
for a given interval. Changing lock types in the supervisor can lead to segment
allocation errors due to lock conflicts for the new tasks when the older tasks
are still running.
This PR allows granting of locks with different types (EXCLUSIVE, SHARED,
APPEND, REPLACE) for the same interval within a task group to ensure a
transition to newer set of task without failure.
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.
- [x] 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)
- [x] added comments explaining the "why" and the intent of the code
wherever would not be obvious for an unfamiliar reader.
- [x] 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.
- [x] been tested in a test Druid cluster.
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