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https://issues.apache.org/jira/browse/ARROW-15051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zixi Wang reassigned ARROW-15051:
---------------------------------
Assignee: Zixi Wang
> [C#] Not nullable field can have null values
> --------------------------------------------
>
> Key: ARROW-15051
> URL: https://issues.apache.org/jira/browse/ARROW-15051
> Project: Apache Arrow
> Issue Type: Bug
> Components: C#
> Affects Versions: 6.0.1
> Reporter: Zixi Wang
> Assignee: Zixi Wang
> Priority: Minor
>
> When the record batch schema field's parameter of nullable is set to false,
> it supposes to make the field not null, however, it can still have null
> values.
>
> Code to reproduce:
> var memoryAllocator = new NativeMemoryAllocator(alignment: 64);
> var stream1 = File.OpenWrite(@"c:\temp\data\test.arrow");
>
> Schema schema = new Schema
> (new List<Field>
>
> { new Field("Column A", StringType.Default, false)
> }
> ,
> default
> );
> List<string> rows = new List<string>();
> rows.Add("11");
> rows.Add("22");
> rows.Add(null);
> ArrowFileWriter writer = new ArrowFileWriter(stream1, schema);
> var recordBatch1 = new RecordBatch.Builder(memoryAllocator)
> .Append("Column A", false, col => col.String(array =>
> array.AppendRange(rows)))
> .Build();
> writer.WriteRecordBatch(recordBatch1);
> writer.WriteEnd();
> stream1.Close();
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