[jira] [Closed] (HBASE-5469) Add baseline compression efficiency to DataBlockEncodingTool

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell closed HBASE-5469.
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> Add baseline compression efficiency to DataBlockEncodingTool
> ------------------------------------------------------------
>
>                 Key: HBASE-5469
>                 URL: https://issues.apache.org/jira/browse/HBASE-5469
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Mikhail Gryzykhin
>            Assignee: Mikhail Gryzykhin
>            Priority: Minor
>         Attachments: ASF.LICENSE.NOT.GRANTED--D2409.1.patch, ASF.LICENSE.NOT.GRANTED--D2409.2.patch, jira-HBASE-5469-Add-baseline-compression-efficiency--2012-03-23_15_04_41.patch
>
>
> DataBlockEncodingTool currently does not provide baseline compression efficiency, e.g. Hadoop compression codec applied to unencoded data. E.g. if we are using LZO to compress blocks, we would like to have the following columns in the report (possibly as percentages of raw data size).
> Baseline K+V in blockcache  |   Baseline K + V on disk  (LZO compressed)  | K + V  DataBlockEncoded in block cache |   K + V DataBlockEncoded + LZOCompressed (on disk)
> Background: we never store compressed blocks in cache, but we always store encoded data blocks in cache if data block encoding is enabled for the column family.



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