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From "Srikanth Kakani (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3315) New binary file format
Date Fri, 09 May 2008 21:05:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595719#action_12595719
] 

Srikanth Kakani commented on HADOOP-3315:
-----------------------------------------

Owen suggested the following:

magic: 4 bytes 
vints: for all offsets and lengths
separate index keys from offsets+ rowids, index keys are compressed.
store extra virtual block row (for final key and final rowid).
flag for memcomparable keys in imeta.

Adding doug's request as well, 

I am updating the document and will post it soon, will have a document by the eod.

> 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
>
> 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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