albertlockett opened a new issue, #372:
URL: https://github.com/apache/arrow-go/issues/372
### Describe the bug, including details regarding any error messages,
version, and platform.
I am able to construct an arrow record, where a field should be
non-nullable, but it contains nullable rows. I'm wondering if maybe
`RecordBuilder.NewRecord()` should confirm that the fields's arrays do not
contain nulls if the field is specified as `Nullable: false` in the schema?
```go
package main
import (
"log"
"github.com/apache/arrow-go/v18/arrow"
"github.com/apache/arrow-go/v18/arrow/array"
"github.com/apache/arrow-go/v18/arrow/memory"
)
func main() {
allocator := memory.NewGoAllocator()
schema := arrow.NewSchema([]arrow.Field{
// should be not null:
{Name: "a", Type: arrow.PrimitiveTypes.Int32, Nullable: false},
}, nil)
recordBuilder := array.NewRecordBuilder(allocator, schema)
recordBuilder.Field(0).(*array.Int32Builder).Append(1)
recordBuilder.Field(0).(*array.Int32Builder).Append(2)
recordBuilder.Field(0).AppendNull()
recordBuilder.Field(0).(*array.Int32Builder).Append(4)
record := recordBuilder.NewRecord() // this works
defer record.Release()
log.Printf("record: %v", record)
/* prints
2025/05/08 20:32:47 record: record:
schema:
fields: 1
- a: type=int32
rows: 4
col[0][a]: [1 2 (null) 4]
*/
}
```
This is not allowed in the Rust implementation:
```rs
use std::sync::Arc;
use arrow_array::{Int32Array, RecordBatch};
use arrow_schema::{DataType, Field, Schema};
#[tokio::main]
async fn main() {
let schema = Arc::new(Schema::new(vec![Field::new("a", DataType::Int32,
false)]));
let mut ids = Int32Array:: builder(4);
ids.append_value(1);
ids.append_value(2);
ids.append_null();
ids.append_value(4);
let ids = ids.finish();
// this panics:
let batch = RecordBatch::try_new(schema.clone(),
vec![Arc::new(ids)]).unwrap();
println!("batch: {:?}", batch);
}
```
### Component(s)
Other
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
