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https://issues.apache.org/jira/browse/HADOOP-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12633937#action_12633937
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stack commented on HADOOP-3315:
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Not getting key+value in the one go is a nice improvement.
-1 on decompressing a block twice if it can be avoided.
Regards discussing our use case, our need is plain. Our catalog table keeps a
list of table regions (Catalog table is basically made from MapFiles). Regions
are denoted by their start and end keys. To update a particular row, client
asks the catalog table for the region that contains the key to update.
Currently we depend on MapFile#getClosest (with the before flag set) to do this.
> 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_20080908_TFILE_PREVIEW_WITH_LZO_TESTS.patch,
> HADOOP-3315_20080915_TFILE.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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