[AVRO-1564] Unknown datum type exception while converting optional bytes using avro-thrift

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.7
• Fix Version/s: 1.8.0
• Component/s: java
• Labels: easyfix
• Assignee: Michael Pershyn
• Reporter: Michael Pershyn
• Created: 08/Aug/14 09:22
• Updated: 01/Feb/16 14:55
• Resolved: 26/Nov/14 19:17

Description

Very similar to AVRO-1500.

When in thrift schema (e.g. Test) with optional byte field:

16: optional byte byteOptionalField

This field is initialized like:

test.setByteOptionalField((byte)4);

Then during conversion of this thrift-object to avro instead of converting it to int 4, the exception is thrown.

org.apache.avro.AvroRuntimeException: Unknown datum type java.lang.Byte: 4                                                                                                                                                                     
        at org.apache.avro.generic.GenericData.getSchemaName(GenericData.java:637)                                                                                                                                                             
        at org.apache.avro.thrift.ThriftData.getSchemaName(ThriftData.java:120)                                                                                                                                                                
        at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:602)                                                                                                                                                              
        at org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:151)                                                                                                                                                
        at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:71)                                                                                                                                                        
        at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:114) 

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Proposed solution is also similar to AVRO-1500 - to overload getSchemaName in org.apache.avro.thrift.ThriftData