Add baseline compression efficiency to DataBlockEncodingTool
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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
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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