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From "Michele Catasta (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2655) 2-pass compression support
Date Wed, 02 Jun 2010 13:47:39 GMT
2-pass compression support
--------------------------

                 Key: HBASE-2655
                 URL: https://issues.apache.org/jira/browse/HBASE-2655
             Project: HBase
          Issue Type: New Feature
          Components: io
            Reporter: Michele Catasta
            Priority: Minor
             Fix For: 0.21.0


Quoting from BigTable paper: "Many clients use a two-pass custom compression scheme. The first
pass uses Bentley and McIlroy's scheme, which compresses long common strings across a large
window. The second pass uses a fast compression algorithm that looks for repetitions in a
small 16 KB window of the data. Both compression passes are very fast—they encode at 100-200
MB/s, and decode at 400-1000 MB/s on modern machines."

The goal of this patch is to integrate a similar compression scheme in HBase.

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