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From "Tim Broberg (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7657) Add support for LZ4 compression
Date Thu, 15 Dec 2011 14:56:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170254#comment-13170254
] 

Tim Broberg commented on HADOOP-7657:
-------------------------------------

I think I'm seeing ~5:1 compression ratios here, is that right?

Compression performance is generally highly sensitive to input data, decompression even more
so.

Is it at all typical to see 5:1 compression with live Hadoop data?

If not, is there an appropriate corpus of data that reflects normal usage?
                
> Add support for LZ4 compression
> -------------------------------
>
>                 Key: HADOOP-7657
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7657
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Mr Bsd
>              Labels: compression
>
> According to several benchmark sites, LZ4 seems to overtake other fast compression algorithms,
especially in the decompression speed area. The interface is also trivial to integrate (http://code.google.com/p/lz4/source/browse/trunk/lz4.h)
and there is no license issue.

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