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From "Will Gorman (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AVRO-1512) Error serializing TUnion with avro-thrift
Date Tue, 20 May 2014 14:24:39 GMT

     [ https://issues.apache.org/jira/browse/AVRO-1512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Will Gorman updated AVRO-1512:
------------------------------

    Attachment: test.thrift

Attaching the Thrift IDL used to reproduce the issue.  It was compiled with Thrift 0.7.0,
matching the version of libthrift currently used by avro-thrift.

> 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
>         Attachments: test.thrift
>
>
> Attempting to serialize a Thrift union type (TUnion) with avro-thrift produces an error
like the following:
> {noformat}
> 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)
> {noformat}
> 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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