[
https://issues.apache.org/jira/browse/CARBONDATA-1429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jacky Li resolved CARBONDATA-1429.
----------------------------------
Resolution: Fixed
Fix Version/s: 1.2.0
> Add a value based compression for decimal data type when decimal is stored as
> Int or Long
> -----------------------------------------------------------------------------------------
>
> Key: CARBONDATA-1429
> URL: https://issues.apache.org/jira/browse/CARBONDATA-1429
> Project: CarbonData
> Issue Type: Improvement
> Reporter: Manish Gupta
> Assignee: Manish Gupta
> Priority: Minor
> Fix For: 1.2.0
>
> Time Spent: 7h
> Remaining Estimate: 0h
>
> Added a value based compression for decimal data type when decimal is stored
> as Int or Long
> When decimal precision is <= 9, decimal values are stored in 4 bytes but they
> are not compressed further based on min and max values as compared with other
> primitive data type compression. Therefore now based on min and max value
> decimal data falling in Integer range will be further compressed as byte or
> short.
> When decimal precision is <= 18, decimal values are stored in 8 bytes but
> they are not compressed further based on min and max values as compared with
> other primitive data type compression. Therefore now based on min and max
> value decimal data falling in Long range will be further compressed as byte,
> short or int.
> Advantage: This will reduce the storage space thereby decreasing the IO time
> while reading and decompressing the data.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
