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https://issues.apache.org/jira/browse/HIVE-17340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16140913#comment-16140913
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Eugene Koifman commented on HIVE-17340:
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@Wei Zheng could you review please
> TxnHandler.checkLock() - reduce number of SQL statements
> --------------------------------------------------------
>
> Key: HIVE-17340
> URL: https://issues.apache.org/jira/browse/HIVE-17340
> Project: Hive
> Issue Type: Improvement
> Components: Transactions
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-17340.03.patch
>
>
> This calls acquire(Connection dbConn, Statement stmt, long extLockId,
> LockInfo lockInfo)
> for each lock in the same DB transaction - 1 Update stmt per acquire().
> There is no reason all of them cannot be sent in 1 statement if all the locks
> are granted
> With a lot of partitions this can be a perf issue
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