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Date: Fri, 2 Mar 2012 21:30:00 +0000 (UTC)
From: "Vinod Kumar Vavilapalli (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HADOOP-7206) Integrate Snappy compression
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     [ https://issues.apache.org/jira/browse/HADOOP-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated HADOOP-7206:
--------------------------------------------

    Attachment: HADOOP-7206-20120302.txt

bq. snappy.lib variable is hardcoded to /usr/lib which may not be true in the case of 64 bit lib where snappy is in /usr/lib64.
Thanks for pointing this out, Giri. I just removed using explicit ends for compiling snappy. I guess we need this for trunk too, but we can do it later.

Attaching patch, that should fix this.
                
> 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: Alejandro Abdelnur
>         Attachments: HADOOP-7206-002.patch, HADOOP-7206-20120223.txt, HADOOP-7206-20120302.txt, HADOOP-7206.patch, HADOOP-7206new-b.patch, HADOOP-7206new-c.patch, HADOOP-7206new.patch, HADOOP-7206revertplusnew-b.patch, HADOOP-7206revertplusnew.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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