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https://issues.apache.org/jira/browse/HIVE-22737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Chauhan updated HIVE-22737:
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Attachment: HIVE-22737.6.patch
> Concurrency: FunctionRegistry::getFunctionInfo is static object locked
> ----------------------------------------------------------------------
>
> Key: HIVE-22737
> URL: https://issues.apache.org/jira/browse/HIVE-22737
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer, UDF
> Reporter: Gopal Vijayaraghavan
> Assignee: Ashutosh Chauhan
> Priority: Major
> Attachments: FunctionRegistry-lock.png, HIVE-22737.2.patch,
> HIVE-22737.3.patch, HIVE-22737.4.patch, HIVE-22737.5.patch,
> HIVE-22737.6.patch, HIVE-22737.patch
>
>
> The lock is inside a HS2-wide static object
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java#L191
> {code}
> // registry for system functions
> private static final Registry system = new Registry(true);
> {code}
> And this is the lock itself
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/Registry.java#L332
> {code}
> public FunctionInfo getFunctionInfo(String functionName) throws
> SemanticException {
> lock.lock();
> {code}
> !FunctionRegistry-lock.png!
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