voonhous commented on issue #18021:
URL: https://github.com/apache/hudi/issues/18021#issuecomment-3810631006
More context:
When there's an InternalSchema, `HoodieHadoopFsRelationFactory` might
resolve to a HoodieSchema that has the Variant logical type in:
```java
protected lazy val (tableSchema: HoodieSchema, internalSchemaOpt:
Option[InternalSchema]) = {
```
and hence:
```java
protected lazy val tableStructSchema: StructType = {
val converted =
HoodieSchemaConversionUtils.convertHoodieSchemaToStructType(tableSchema)
val metaFieldMetadata = sparkAdapter.createCatalystMetadataForMetaField
// NOTE: Here we annotate meta-fields with corresponding metadata such
that Spark (>= 3.2)
// is able to recognize such fields as meta-fields
StructType(converted.map { field =>
if (metaFieldNames.exists(metaFieldName => resolver(metaFieldName,
field.name))) {
field.copy(metadata = metaFieldMetadata)
} else {
field
}
})
}
```
This might resolve to a Variant type in Spark3.5, which might throw an
error.
We need to verify if this is true and add a test to guard against this.
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