cshuo opened a new pull request, #18712:
URL: https://github.com/apache/hudi/pull/18712
…TOR columns
### Describe the issue this Pull Request addresses
Flink table reads could fail for Hudi tables created by Spark when the table
schema contains VECTOR columns, even when the query only projects non-VECTOR
fields. The failure came from Flink-side schema conversion and reader
validation not distinguishing between the full table schema and the
required/projected read schema.
This PR improves Flink compatibility with Spark-written VECTOR tables by
converting VECTOR schema metadata into Flink array element types while still
rejecting actual VECTOR column reads until Flink reader support is implemented.
### Summary and Changelog
- Adds VECTOR handling to `HoodieSchemaConverter`, mapping VECTOR element
types to Flink arrays:
- `FLOAT` -> `ARRAY<FLOAT>`
- `DOUBLE` -> `ARRAY<DOUBLE>`
- `INT8` -> `ARRAY<TINYINT>`
- Adds Flink reader validation via
`DataTypeUtils.validateReaderSupportedDataTypes`, rejecting reads only when
projected fields include VECTOR columns.
- Updates `HoodieTableSource` to validate the produced/read data type before
building the source pipeline, and caches resolved table schema.
### Impact
- **Functional impact**: Flink can build read pipelines and query non-VECTOR
columns from Hudi tables that contain VECTOR columns; direct VECTOR column
reads still fail with a clear validation error.
### Risk Level
low
<!-- 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. -->
### 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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