[jira] [Created] (AVRO-1512) Error serializing TUnion with avro-thrift

["Will Gorman (JIRA)" <ji...@apache.org>]

Will Gorman created AVRO-1512:
---------------------------------

             Summary: Error serializing TUnion with avro-thrift
                 Key: AVRO-1512
                 URL: https://issues.apache.org/jira/browse/AVRO-1512
             Project: Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.7.6
            Reporter: Will Gorman


Attempting to serialize a Thrift union type (TUnion) with avro-thrift produces an error like the following:

{code}
org.apache.avro.AvroRuntimeException: Unknown datum type org.apache.avro.thrift.test.FooOrBar: <FooOrBar foo:foo>
	at org.apache.avro.generic.GenericData.getSchemaName(GenericData.java:639)
	at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:604)
	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)
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:104)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:66)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:58)
	at org.apache.avro.thrift.TestThrift.check(TestThrift.java:83)
	at org.apache.avro.thrift.TestThrift.testStruct(TestThrift.java:60)
{code}

Upon investigation it appears that ThriftData#isRecord intentionally does not accept TUnion types as Avro records and so GenericData is unable to determine an Avro type for the datum.  However, ThriftData#getSchema does generate an Avro record schema for Thrift union types.



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