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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6165) Add metadata to Serializations
Date Thu, 13 Aug 2009 21:09:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12742961#action_12742961
] 

Tom White commented on HADOOP-6165:
-----------------------------------

bq. That way Avro data can be read whether or not a specific or reflect class is loaded.

So there'd just be a single AvroSerialization?

> Add metadata to Serializations
> ------------------------------
>
>                 Key: HADOOP-6165
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6165
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: contrib/serialization
>            Reporter: Tom White
>            Assignee: Tom White
>            Priority: Blocker
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-6165-v2.patch, HADOOP-6165.patch
>
>
> The Serialization framework only allows a class to be passed as metadata. This assumes
there is a one-to-one mapping between types and Serializations, which is overly restrictive.
By permitting applications to pass arbitrary metadata to Serializations, they can get more
control over which Serialization is used, and would also allow, for example, one to pass an
Avro schema to an Avro Serialization.

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