Xingjun Hao created CARBONDATA-3670:
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Summary: 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
Fix For: 2.0.0
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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