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https://issues.apache.org/jira/browse/HBASE-5469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237193#comment-13237193
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Phabricator commented on HBASE-5469:
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mbautin has committed the revision "[jira] [HBASE-5469] Add baseline
compression efficiency to DataBlockEncodingTool".
REVISION DETAIL
https://reviews.facebook.net/D2409
COMMIT
https://reviews.facebook.net/rHBASE1304626
> 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 Bautin
> Assignee: Mikhail Bautin
> Priority: Minor
> Attachments: D2409.1.patch, 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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