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https://issues.apache.org/jira/browse/HIVE-19213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16438763#comment-16438763
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Eugene Koifman commented on HIVE-19213:
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transactions are opened before the query is analyzed so you can't skip that
(w/o adding a hack).
We have Entity.Type.DUMMYPARTITION. If we can add Type.DUMMTABLE, the lock
manager can easily skip acquiring locks for this resource.
> Values query: Stop opening transactions on _dummy_table
> -------------------------------------------------------
>
> Key: HIVE-19213
> URL: https://issues.apache.org/jira/browse/HIVE-19213
> Project: Hive
> Issue Type: Bug
> Reporter: Gopal V
> Priority: Major
>
> When the -query-cache is hit- query is a values clause, the ACID TxnManager
> opens a txn + lock + heartbeats on _dummy_database._dummy_table.
> This is blocking values clause from jumping through the fast-paths for
> transactions.
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