[jira] Commented: (AVRO-95) mixing multiple types in one data file using reflection is not supported

["Doug Cutting (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-95?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12744228#action_12744228 ] 

Doug Cutting commented on AVRO-95:
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The recommended way to handle this would be to use a union of the records you intend to append to the file.  Then use a single DatumWriter/DataFileWriter to write all records.

> mixing multiple types in one data file using reflection is not supported
> ------------------------------------------------------------------------
>
>                 Key: AVRO-95
>                 URL: https://issues.apache.org/jira/browse/AVRO-95
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.0.0, 1.0.1
>            Reporter: Eelco Hillenius
>             Fix For: 1.0.1
>
>         Attachments: AVRO-95.patch
>
>
> My use case is that I have a bunch of different kind of events (in a hierarchy actually, which right now isn't supported either, see AVRO-93), that I would like to write out to log files using Avro. Unfortunately, writing more than one type via reflection seems to be broken currently. I think I can tell from the code and the resulting data file that this should be supported, but it seems that there are a few issues with the implementation right now.

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