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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7206) Integrate Snappy compression
Date Mon, 20 Jun 2011 16:38:47 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated HADOOP-7206:
------------------------------

       Resolution: Fixed
    Fix Version/s: 0.23.0
         Assignee: T Jake Luciani  (was: issei yoshida)
     Release Note:   (was: This patch bring the snappy compression to Hadoop.

It requires the snappy v1.0.2 or higher,
Because it doesn't use C++ interface but C interface and loads the snappy native library dynamically
via dlopen.

Its native library is a part of the libhadoop.)
     Hadoop Flags: [Reviewed]
           Status: Resolved  (was: Patch Available)

I've just committed this. Thanks T Jake and Issei.

> Integrate Snappy compression
> ----------------------------
>
>                 Key: HADOOP-7206
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7206
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.21.0
>            Reporter: Eli Collins
>            Assignee: T Jake Luciani
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7206-002.patch, HADOOP-7206.patch, v2-HADOOP-7206-snappy-codec-using-snappy-java.txt,
v3-HADOOP-7206-snappy-codec-using-snappy-java.txt, v4-HADOOP-7206-snappy-codec-using-snappy-java.txt,
v5-HADOOP-7206-snappy-codec-using-snappy-java.txt
>
>
> 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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