the-other-tim-brown opened a new pull request, #18108:
URL: https://github.com/apache/hudi/pull/18108
### Describe the issue this Pull Request addresses
<!-- Either describe the issue inline here with motivation behind the
changes
(or) link to an issue by including `Closes #<issue-number>` for
context.
If this PR includes changes to the storage format, public APIs,
or has breaking changes, use `!` (e.g., feat!: ...) -->
Defines the blob storage schema and converters to/from Spark as the starting
point for building out Blob support in Hudi.
### Summary and Changelog
<!-- Short, plain-English summary of what users gain or what changed in
behavior.
Followed by a detailed log of all the changes. Highlight if any code
was copied. -->
- Adds a new logical type to the HoodieSchema that matches the definition in
the proposed [RFC-100 changes
here](https://github.com/apache/hudi/pull/18013/changes)
- Updates the spark schema converter to attach extra metadata to describe
the type and then use that metadata when converting back to HoodieSchema
### Impact
<!-- Describe any public API or user-facing feature change or any
performance impact. -->
Lays the foundation for future blob storage work
### Risk Level
<!-- Accepted values: none, low, medium or high. Other than `none`, explain
the risk.
If medium or high, explain what verification was done to mitigate the
risks. -->
Low, does not impact existing paths outside of spark type conversion which
is tested
### Documentation Update
<!-- Describe any necessary documentation update if there is any new
feature, config, or user-facing change. If not, put "none".
- The config description must be updated if new configs are added or the
default value of the configs are changed.
- Any new feature or user-facing change requires updating the Hudi website.
Please follow the
[instruction](https://hudi.apache.org/contribute/developer-setup#website)
to make changes to the website. -->
### Contributor's checklist
- [ ] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [ ] Enough context is provided in the sections above
- [ ] Adequate tests were added if applicable
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