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From "He Yongqiang (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5521) Move compression/decompression to an encoder specific encoding context
Date Mon, 05 Mar 2012 19:49:57 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

He Yongqiang updated HBASE-5521:
--------------------------------

    Attachment: HBASE-5521.1.patch
    
> Move compression/decompression to an encoder specific encoding context
> ----------------------------------------------------------------------
>
>                 Key: HBASE-5521
>                 URL: https://issues.apache.org/jira/browse/HBASE-5521
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>         Attachments: HBASE-5521.1.patch
>
>
> As part of working on HBASE-5313, we want to add a new columnar encoder/decoder. It makes
sense to move compression to be part of encoder/decoder:
> 1) a scanner for a columnar encoded block can do lazy decompression to a specific part
of a key value object
> 2) avoid an extra bytes copy from encoder to hblock-writer. 
> If there is no encoder specified for a writer, the HBlock.Writer will use a default compression-context
to do something very similar to today's code.

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