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https://issues.apache.org/jira/browse/HIVE-25011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320533#comment-17320533
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Gopal Vijayaraghavan commented on HIVE-25011:
---------------------------------------------
{code}
/**
* Find whether we should execute the current query due to explain
* @return true if the query needs to be executed, false if not
*/
public boolean isExplainSkipExecution() {
return (explainConfig != null && explainConfig.getAnalyze() !=
AnalyzeState.RUNNING);
}
{code}
Looks like the comment is actually wrong on the "return true"
> Concurrency: Do not acquire locks for EXPLAIN
> ---------------------------------------------
>
> Key: HIVE-25011
> URL: https://issues.apache.org/jira/browse/HIVE-25011
> Project: Hive
> Issue Type: Improvement
> Components: Locking, Transactions
> Affects Versions: 4.0.0
> Reporter: Gopal Vijayaraghavan
> Assignee: Gopal Vijayaraghavan
> Priority: Major
> Attachments: HIVE-25011.1.patch
>
>
> {code}
> EXPLAIN UPDATE ...
> {code}
> should not be in conflict with another active ongoing UPDATE operation.
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