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https://issues.apache.org/jira/browse/CARBONDATA-780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravindra Pesala resolved CARBONDATA-780.
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Resolution: Fixed
> Alter table support for compaction through sort step
> ----------------------------------------------------
>
> Key: CARBONDATA-780
> URL: https://issues.apache.org/jira/browse/CARBONDATA-780
> Project: CarbonData
> Issue Type: Sub-task
> Reporter: Manish Gupta
> Assignee: Manish Gupta
> Fix For: 1.1.0
>
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> Alter table need to support compaction process where complete data need to be
> sorted again and then written to file.
> Currently in compaction process data is directly given to writer step where
> it is splitted into columns and written. But as columns are sorted from left
> to right, on dropping a column data will again become unorganized as dropped
> column data will not be considered during compaction. In these scenarios
> complete data need to be sorted again and then submitted to writer step.
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