clintropolis opened a new pull request, #13900:
URL: https://github.com/apache/druid/pull/13900
Fixes #13879.
### Description
Fixes issues when using `KafkaInputFormat` with the sampler API. My initial
assessment in #13879 was only partially correct. The implementation of the
`sample` method in `KafkaInputReader` also wasn't really correct since by just
using the normal read path it did not correctly capture `ParseException` and so
would fail immediately. I've adjusted the `sample` method to delegate to the
underlying readers `sample`, which will correctly handle these, and changed the
blending to occur on the `InputRowListPlusRawValues` of the underlying sample
call instead.
#### Release note
The `KafkaInputFormat` now supports using the sampler API
`/druid/indexer/v1/sampler`.
<hr>
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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