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https://issues.apache.org/jira/browse/HADOOP-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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issei yoshida updated HADOOP-7206:
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Attachment: HADOOP-7206-002.patch
update for the latest Hadoop trunk
and change the compression overhead.
> 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: issei yoshida
> Attachments: HADOOP-7206-002.patch, HADOOP-7206.patch
>
>
> 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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