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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7206) Integrate Snappy compression
Date Mon, 04 Apr 2011 17:44:06 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015512#comment-13015512
] 

Todd Lipcon commented on HADOOP-7206:
-------------------------------------

Hi Issei. Thanks for starting the work to port Snappy to a compression codec! The only concern
I have with your codebase is that it seems to be derived from the hadoop-lzo codebase, which
has portions of the Java code licensed under the GPL.

As I understand it, so long as all of the copyright owners (ie authors) of the LZO codebase
agree, we can relicense the Java portions of that code as Apache or BSD. I believe the main
author list is:
- me
- Kevin Weil
- Owen O'Malley
- Hong Tang
- Chris Douglas

Do others agree with this assessment?

> Integrate Snappy compression
> ----------------------------
>
>                 Key: HADOOP-7206
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7206
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Eli Collins
>
> Google release Zippy as an open source (APLv2) project called Snappy (http://code.google.com/p/snappy).
This tracks integrating it into Hadoop.
> {quote}
> Snappy is a compression/decompression library. It does not aim for maximum compression,
or compatibility with any other compression library; instead, it aims for very high speeds
and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is
an order of magnitude faster for most inputs, but the resulting compressed files are anywhere
from 20% to 100% bigger. On a single core of a Core i7 processor in 64-bit mode, Snappy compresses
at about 250 MB/sec or more and decompresses at about 500 MB/sec or more.
> {quote}

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