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https://issues.apache.org/jira/browse/CARBONDATA-4062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ajantha Bhat resolved CARBONDATA-4062.
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Fix Version/s: 2.2.0
Resolution: Fixed
> Should make clean files become data trash manager
> -------------------------------------------------
>
> Key: CARBONDATA-4062
> URL: https://issues.apache.org/jira/browse/CARBONDATA-4062
> Project: CarbonData
> Issue Type: Improvement
> Reporter: David Cai
> Priority: Major
> Fix For: 2.2.0
>
> Time Spent: 26h 10m
> Remaining Estimate: 0h
>
> To prevent accidental deletion of data, carbon will introduce data trash
> management. It will provide buffer time for accidental deletion of data to
> roll back the delete operation.
> Data trash management is a part of carbon data lifecycle management. Clean
> files as a data trash manager should contain the following two parts.
> part 1: manage metadata-indexed data trash.
> This data is at the original place of the table and indexed by metadata.
> carbon manages this data by metadata index and should avoid using listFile()
> interface.
> part 2: manage ".Trash" folder.
> Now ".Trash" folder is without metadata index, and the operation on it
> bases on timestamp and listFile() interface. In the future, carbon will index
> ".Trash" folder to improve data trash management.
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