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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3528) Avro SerDe doesn't handle serializing Nullable types that require access to a Schema
Date Thu, 14 Feb 2013 18:23:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578545#comment-13578545
] 

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

In that case, since 0.11 hasn't gone out yet, either including error information here or starting
another JIRA is fine.

I'd recommend including the error information here until we can determine if your problem
is the one that this patch is supposed to fix.
                
> 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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