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https://issues.apache.org/jira/browse/HIVE-17710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16288109#comment-16288109
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Alan Gates commented on HIVE-17710:
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+1 for patch 4.
> 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, HIVE-17710.02.patch,
> HIVE-17710.03.patch, HIVE-17710.04.patch, HIVE-17710.04.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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