lliangyu-lin commented on issue #12441:
URL: https://github.com/apache/iceberg/issues/12441#issuecomment-2741740243
I wasn't able to reproduce the issue...
Reproduction step I tried
* Create schema with required `id` and optional `school`(with required
`year` and optional `details`) columns
```
Schema schema = new Schema(
required(1, "id", Types.LongType.get()),
optional(2, "school", Types.StructType.of(
required(3, "year", Types.IntegerType.get()),
optional(4, "details", Types.StringType.get())
))
);
```
* Create HadoopTables with the Schema
* Create records with combination of empty `school` column and `school`
column with empty `details`.
* Using Table `newAppend` API to add the parquet files with above records to
the table
* Run `IcebergGenerics.read(table).build()` to check the records
Could you share more details on how the table is created and how data is
added to the table? It's possible the issue is happening on write side.
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