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From "Ravi Gummadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5450) Add support for application-specific typecodes to typed bytes
Date Mon, 28 Jun 2010 10:29:49 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12883096#action_12883096
] 

Ravi Gummadi commented on HADOOP-5450:
--------------------------------------

Looks like "the revert of other unnecessary code changes done" also reverted the needed changes
to TestIO.java unintentionally in trunk ?

> Add support for application-specific typecodes to typed bytes
> -------------------------------------------------------------
>
>                 Key: HADOOP-5450
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5450
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Klaas Bosteels
>            Assignee: Klaas Bosteels
>            Priority: Blocker
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5450.patch
>
>
> For serializing objects of types that are not supported by typed bytes serialization,
applications might want to use a custom serialization format. Right now, typecode 0 has to
be used for the bytes resulting from this custom serialization, which could lead to problems
when deserializing the objects because the application cannot know if a byte sequence following
typecode 0 is a customly serialized object or just a raw sequence of bytes. Therefore, a range
of typecodes that are treated as aliases for 0 should be added, such that different typecodes
can be used for application-specific purposes.

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