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Date: Wed, 2 Jun 2010 11:12:21 -0400 (EDT)
From: "Michele Catasta (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Assigned: (HADOOP-5793) High speed compression algorithm
 like BMDiff
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     [ https://issues.apache.org/jira/browse/HADOOP-5793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michele Catasta reassigned HADOOP-5793:
---------------------------------------

    Assignee: Michele Catasta

> High speed compression algorithm like BMDiff
> --------------------------------------------
>
>                 Key: HADOOP-5793
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5793
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: elhoim gibor
>            Assignee: Michele Catasta
>            Priority: Minor
>
> Add a high speed compression algorithm like BMDiff.
> It gives speeds ~100MB/s for writes and ~1000MB/s for reads, compressing 2.1billions web pages from 45.1TB in 4.2TB
> Reference:
> http://norfolk.cs.washington.edu/htbin-post/unrestricted/colloq/details.cgi?id=437
> 2005 Jeff Dean talk about google architecture - around 46:00.
> http://feedblog.org/2008/10/12/google-bigtable-compression-zippy-and-bmdiff/
> http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=755678
> A reference implementation exists in HyperTable.

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