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https://issues.apache.org/jira/browse/HIVE-17710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16206547#comment-16206547
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Eugene Koifman commented on HIVE-17710:
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Also consider closing an implicit txn immediately after compiling if we know it
only uses External tables.
Somewhat orthogonal, maybe useful to have ReadOnly txn mode - this could
simplify TxnHandler.commitTxn()
> LockManager and External 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
>
> 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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