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https://issues.apache.org/jira/browse/PHOENIX-3605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Samarth Jain updated PHOENIX-3605:
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Issue Type: Sub-task (was: Task)
Parent: PHOENIX-2565
> Delete data for a column dropped from encoded immutable table
> -------------------------------------------------------------
>
> Key: PHOENIX-3605
> URL: https://issues.apache.org/jira/browse/PHOENIX-3605
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Samarth Jain
>
> As part of PHOENIX-3604, when a column is dropped from an encoded immutable
> table, we only mark the column as dropped in metadata. This way while we
> disallow access to the column through phoenix queries, the data is still
> around if someone accesses it directly via hbase. To truly drop the data, we
> would need to rewrite the packed encoded cell. We can do this during major
> compaction where we can replace the contents of a dropped column with null.
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