clintropolis opened a new pull request, #15417:
URL: https://github.com/apache/druid/pull/15417
### Description
This PR updates the 'auto' schema to add a new `castToType` parameter which
accepts a `ColumnType` to allow forcing the 'auto' indexer to cast values to a
specific type. One of the main use cases for this is MSQ array ingestion, which
can now specify the exact desired type, but also allows known type columns to
use all of the new features provided by 'auto' columns such as numeric indexes
and array type columns for any other native ingestion. This only works for
primitive/primitive array types, and will be ignored if any other type is used.
The column part serde stores an extra `enforceLogicalType` which is used to
ensure the correct casting schema is created for stuff like auto-compaction.
#### Release note
tbd
<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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