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https://issues.apache.org/jira/browse/CARBONDATA-3670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kunal Kapoor updated CARBONDATA-3670:
-------------------------------------
    Fix Version/s:     (was: 2.0.0)
                   2.1.0

> Support compress offheap columnpage directly, avoding a copy of data from 
> offhead to heap when compressed.
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: CARBONDATA-3670
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-3670
>             Project: CarbonData
>          Issue Type: Wish
>          Components: core
>    Affects Versions: 2.0.0
>            Reporter: Xingjun Hao
>            Priority: Minor
>             Fix For: 2.1.0
>
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> When writing data, the columnpages are stored on the offheap,  the pages will 
> be compressed to save storage cost. Now, in the compression processing, the 
> data will be copied from the offheap to the heap before compressed, which 
> leads to heavier GC overhead compared with compress offhead directly.
> To sum up, we support compress offheap columnpage directly, avoding a copy of 
> data from offhead to heap when compressed.



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