brunomendola opened a new issue, #12223:
URL: https://github.com/apache/iceberg/issues/12223
### Apache Iceberg version
1.5.0
### Query engine
Spark
### Please describe the bug 🐞
Currently we cannot add the parent field with its child nested field in the
same transaction.
For example,
```
updateSchema.addColumn("myparent", parentType)
updateSchema.addColumn("myparent", "mychild", childType)
```
results in the error
`IllegalArgumentException: cannot find parent struct: myparent`
This exception is caused by the check in `SchemaUpdate#internalAddColumn`,
which calls `findField(parent)`, that in turn checks in `this.schema`, which
contains only the committed changes. The uncommitted changes are in `this.adds`
instead.
This is the exact same issue that is also present in the Python
implementation: https://github.com/apache/iceberg-python/issues/1493
### Willingness to contribute
- [ ] 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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