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Posted to common-issues@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2009/09/03 03:37:32 UTC

[jira] Updated: (HADOOP-6165) Add metadata to Serializations

     [ https://issues.apache.org/jira/browse/HADOOP-6165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White updated HADOOP-6165:
------------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]
          Status: Resolved  (was: Patch Available)

I've just committed this.

> 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-v3.patch, HADOOP-6165-v4.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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