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From "Joey Echeverria (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3528) Avro SerDe doesn't handle serializing Nullable types that require access to a Schema
Date Wed, 20 Feb 2013 22:49:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582617#comment-13582617
] 

Joey Echeverria commented on HIVE-3528:
---------------------------------------

Hey Michael,

As a work around, did you try casting the null to the type of the column that you're inserting
into? It's not ideal, but might be a workable interim solution.

-Joey
                
> 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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