[AVRO-3047] SpecificDatumReader fails to deserialze Records with mapped namespaces

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.10.1
• Component/s: csharp
• Assignee: Unassigned
• Reporter: Philip Sanetra
• Created: 16/Feb/21 09:13
• Updated: 14/Jun/22 17:15

Description

The SpecificDatumReader is unable to deserialize schemas, which should be deserialized to SpecificRecord implementations when the SpecifcRecord namespace was mapped by the avrogen tool. In this case the namespace of the schema does not match the namespace of the C# class (as expected), but the SpecificRecordAccess class tries to instanciate that SpecificRecord class via the namespace from the Schema instead of the mapped namespace, provided to the avrogen tool:

https://github.com/apache/avro/blob/b90278af3446fe82b061c08076d61b7d1ecaa445/lang/csharp/src/apache/main/Specific/SpecificDatumReader.cs#L112