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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-3605) Delete data for a column dropped from encoded immutable table
Date Tue, 07 Mar 2017 22:22:38 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-3605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Taylor updated PHOENIX-3605:
----------------------------------
    Issue Type: Sub-task  (was: Bug)
        Parent: PHOENIX-3720

> 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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