[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 ]

suo tong updated CARBONDATA-431:
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    Summary: Analysis compression for numeric datatype compared with Parquet/ORC  (was: Analysis compression for numric datatype compared with Parquet/ORC)

> 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: Jacky Li
>
> For the data type, carbon's string type has better compression ratio, but for numric
> 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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