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https://issues.apache.org/jira/browse/HIVE-14158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15370254#comment-15370254
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Pengcheng Xiong commented on HIVE-14158:
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[~ashutoshc] and [~hagleitn]. The previous patch 03 does not work for (1)
enforced view column names and (2) existing view column authorization
mechanism. Thus I worked out patch 04. It will solve both the view auto
generated column alias problem and the virtual column problem. The design is
that (1) give a different auto generated column alias. (to solve the view auto
generated column alias problem) and (2) add the virtual columns for masking
tables and unparse translate the "*". It seems that the price is that we have
to go through genOp twice, i.e., the first time, unparse the "select *", the
second time, add all the virtual columns. See the below query
{code}
select * from maskTable
{code}
If we only go through genOp once, then it will be rewritten to
{code}
select * from (select key, mask(value) as value, ROW__ID... etc )maskTable
{code}
It will change the RR of the maskTable to the outside.
> deal with derived column names
> ------------------------------
>
> Key: HIVE-14158
> URL: https://issues.apache.org/jira/browse/HIVE-14158
> Project: Hive
> Issue Type: Sub-task
> Components: Security
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Fix For: 2.1.0
>
> Attachments: HIVE-14158.01.patch, HIVE-14158.02.patch,
> HIVE-14158.03.patch, HIVE-14158.04.patch
>
>
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