[jira] [Updated] (CARBONDATA-431) Analysis compression for numeric datatype compared with Parquet/ORC

[Akash R Nilugal (Jira)]

     [ https://issues.apache.org/jira/browse/CARBONDATA-431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacky Li updated CARBONDATA-431:
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    Fix Version/s: 1.0.0-incubating

> Analysis compression for numeric datatype compared with Parquet/ORC
> -------------------------------------------------------------------
>
>                 Key: CARBONDATA-431
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-431
>             Project: CarbonData
>          Issue Type: Sub-task
>            Reporter: suo tong
>            Assignee: Ashok Kumar
>             Fix For: 1.0.0-incubating
>
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> For the data type, carbon's string type has better compression ratio, but for numeric type, orc has the best compression. we should analysis numeric datatype for carbon to get better compression ratio
> DataType    Text Parquet  Orc Carbon
> decimal  16G  | 11G      | 6G   |    13G
> int          5G   |     1G     |    1G   |    3G
> String  24G  | 22G     |    11G   | 3G   （no dictionary）       -------    high cardinality
> String 30G    | 4G     |    4G   |    1G  -- Dictionary encode            1G  -- Dictionary encode without inverted index            3G  -- No dictionary encode              -----------low cardinality

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