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Date: Thu, 14 Feb 2013 18:07:12 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12610154.1349304738543.289641.1360865232972@arcas>
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Subject: [jira] [Commented] (HIVE-3528) Avro SerDe doesn't handle
 serializing Nullable types that require access to a Schema
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    [ https://issues.apache.org/jira/browse/HIVE-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578534#comment-13578534 ] 

Sean Busbey commented on HIVE-3528:
-----------------------------------

Hi Michael,

Do you mean [Haivvreo|https://github.com/jghoman/haivvreo]? I don't believe this fix has been backported. Issues with that project should be filed [against its issue tracker|https://github.com/jghoman/haivvreo/issues]. I believe that project is only maintained on a best effort basis now, in favor of the integrated support within Hive.
                
> Avro SerDe doesn't handle serializing Nullable types that require access to a Schema
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-3528
>                 URL: https://issues.apache.org/jira/browse/HIVE-3528
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>              Labels: avro
>             Fix For: 0.11.0
>
>         Attachments: HIVE-3528.1.patch.txt, HIVE-3528.2.patch.txt
>
>
> Deserialization properly handles hiding Nullable Avro types, including complex types like record, map, array, etc. However, when Serialization attempts to write out these types it erroneously makes use of the UNION schema that contains NULL and the other type.
> This results in Schema mis-match errors for Record, Array, Enum, Fixed, and Bytes.
> Here's a [review board of unit tests that express the problem|https://reviews.apache.org/r/7431/], as well as one that supports the case that it's only when the schema is needed.

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