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From "Owen O'Malley (Updated) (JIRA)" <>
Subject [jira] [Updated] (HIVE-2711) Make the header of RCFile unique
Date Thu, 05 Apr 2012 18:38:27 GMT


Owen O'Malley updated HIVE-2711:

    Attachment: rc-file-v0.rc

Here's the binary file that arc didn't include in the patch.
> Make the header of RCFile unique
> --------------------------------
>                 Key: HIVE-2711
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: HIVE-2711.D2115.1.patch, HIVE-2711.D2115.2.patch, HIVE-2711.D2115.3.patch,
HIVE-2711.D2571.1.patch, rc-file-v0.rc
> The RCFile implementation was copied from Hadoop's SequenceFile and copied the 'magic'
string in the header. This means that you can't use the header to distinguish between RCFiles
and SequenceFiles.
> I'd propose that we create a new header for RCFiles (RCF?) to replace the current SEQ.
To maintain compatibility, we'll need to continue to accept the current 'SEQ\06' and just
make new files contain the new header.

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