Govindarajan-D opened a new issue, #16123:
URL: https://github.com/apache/iceberg/issues/16123
### Apache Iceberg version
None
### Query engine
None
### Please describe the bug 🐞
In StructProjection.java, for nested Struct Types, allowMissing is not
passed to the constructor there by making any optional fields in nested struct
to throw IllegalArgumentException instead of it being made as null.
```
case STRUCT:
nestedProjections[pos] =
new StructProjection(
dataField.type().asStructType(),
projectedField.type().asStructType());
// allowMissing is not forwarded
break;
```
Ref:
https://github.com/apache/iceberg/blob/bac514ab4e72f0a75bf045c63a66009a0115022e/api/src/main/java/org/apache/iceberg/util/StructProjection.java#L126-L127
### Willingness to contribute
- [x] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from
the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
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