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https://issues.apache.org/jira/browse/ORC-14?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029078#comment-17029078
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Xinli Shang commented on ORC-14:
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[~omalley], Are the masking value and the encrypted value stored separately?
Do you have numbers for the storage overhead for adding data masking,
specifically for sha256 masking?
> Add column level encryption to ORC files
> ----------------------------------------
>
> Key: ORC-14
> URL: https://issues.apache.org/jira/browse/ORC-14
> Project: ORC
> Issue Type: New Feature
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Priority: Major
> Fix For: 1.6.0
>
> Attachments: columnEncryption.png
>
>
> It would be useful to support column level encryption in ORC files. Since
> each column and its associated index is stored separately, encrypting a
> column separately isn't difficult. In terms of key distribution, it would
> make sense to use an external server like the one in HADOOP-9331.
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