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From "Amir Youssefi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3315) New binary file format
Date Fri, 12 Sep 2008 01:43:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630453#action_12630453
] 

Amir Youssefi commented on HADOOP-3315:
---------------------------------------

Hi Owen, 

- Thanks for the help/great comments. 

-  I am trying to convince Hong to have vint stuff decoupled to a
sepearate JIRA and make it easier for TFile to get through. We can push
for it a bit more inside this JIRA, later we could give some grounds or
make bargaining chip out of it.

- Any action item for "# number of columns included in header"?

  We don't have such a thing now ;)

  Meta Blocks which contain Metadata show up later in the file. Header
is just a Magic Number ...

Thanks
Amir



> New binary file format
> ----------------------
>
>                 Key: HADOOP-3315
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3315
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: io
>            Reporter: Owen O'Malley
>            Assignee: Amir Youssefi
>         Attachments: HADOOP-3315_TFILE_PREVIEW.patch, HADOOP-3315_TFILE_PREVIEW_WITH_LZO_TESTS.patch,
TFile Specification Final.pdf
>
>
> SequenceFile's block compression format is too complex and requires 4 codecs to compress
or decompress. It would be good to have a file format that only needs 

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