Gopal Vijayaraghavan created HIVE-22737:
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Summary: 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
Attachments: FunctionRegistry-lock.png
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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