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https://issues.apache.org/jira/browse/HIVE-12064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15134526#comment-15134526
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Eugene Koifman commented on HIVE-12064:
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I would describe the invariants like this:
1) if "transactional=true" then table must be bucketed and implement Acid I/O
Format
2) if running Alter table on an Acid table then after alter table
"transactional=true" must be present
> prevent transactional=false
> ---------------------------
>
> Key: HIVE-12064
> URL: https://issues.apache.org/jira/browse/HIVE-12064
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 1.0.0
> Reporter: Eugene Koifman
> Assignee: Wei Zheng
> Priority: Critical
> Attachments: HIVE-12064.2.patch, HIVE-12064.patch
>
>
> currently a tblproperty transactional=true must be set to make a table behave
> in ACID compliant way.
> This is misleading in that it seems like changing it to transactional=false
> makes the table non-acid but on disk layout of acid table is different than
> plain tables. So changing this property may cause wrong data to be returned.
> Should prevent transactional=false.
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