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https://issues.apache.org/jira/browse/AVRO-1162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455335#comment-13455335
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Doug Cutting commented on AVRO-1162:
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This looks reasonable to me.  Can you please add a test that fails without it?
                
> AvroKeyValueOutputFormat doesn't support serialization of data using 
> reflection 
> --------------------------------------------------------------------------------
>
>                 Key: AVRO-1162
>                 URL: https://issues.apache.org/jira/browse/AVRO-1162
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.7.2
>            Reporter: Alexandre Normand
>            Assignee: Alexandre Normand
>              Labels: java, newbie
>         Attachments: AVRO-1162.patch
>
>
> When setting up a map/reduce job with the AvroKeyValueOutputFormat, using 
> Reflection to create the schema and AvroValue to wrap the data objects to 
> serialize, I get a ClassCastException because the datum is the object and not 
> an instance of IndexedRecord.
> I think that AvroKeyValueRecordWriter should create a {{ReflectDatumWriter}} 
> much like AvroKeyRecordWriter does instead of a {{GenericDatumWriter}}, right?

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