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https://issues.apache.org/jira/browse/HIVE-17710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282822#comment-16282822
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Alan Gates commented on HIVE-17710:
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What you say about not able to lock during compile makes sense. I forgot we
compile then lock (by necessity) not the other way around.
But I don't follow what you're saying about it being not useful to prevent a
drop. Isn't that exactly what locks are for? Which case are you talking
about, views, materialized views, or managed tables? For views you've
convinced me, but not for the others.
> LockManager should only lock Managed tables
> -------------------------------------------
>
> Key: HIVE-17710
> URL: https://issues.apache.org/jira/browse/HIVE-17710
> Project: Hive
> Issue Type: New Feature
> Components: Transactions
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-17710.01.patch
>
>
> should the LM take locks on External tables? Out of the box Acid LM is being
> conservative which can cause throughput issues.
> A better strategy may be to exclude External tables but enable explicit "lock
> table/partition <lock mode>" command (only on external tables?).
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