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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6708) New file format for very large records
Date Thu, 15 Apr 2010 22:22:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857578#action_12857578
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Aaron Kimball commented on HADOOP-6708:
---------------------------------------

In working on Sqoop, I need to import records which may be several gigabytes in size each.
I require a file format that allows me to store these records in an efficient, grouped fashion.

Users may then want to open a file containing many such records and partially-read individual
records, but still access subsequent records efficiently. 

I'm attaching to this issue a proposal for a _LobFile_ format which will store these large
objects. (The basis for this work surrounds import of BLOB and CLOB-typed columns.) The specification
proposal analyzes available file formats and my understanding of why they aren't appropriate
here.

> New file format for very large records
> --------------------------------------
>
>                 Key: HADOOP-6708
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6708
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>
> A file format that handles multi-gigabyte records efficiently, with lazy disk access

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