Jaideep Dhok created HIVE-6364:
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Summary: HiveServer2 should get class loader from existing
SessionState
Key: HIVE-6364
URL: https://issues.apache.org/jira/browse/HIVE-6364
Project: Hive
Issue Type: Bug
Reporter: Jaideep Dhok
SessionState is created for each session in HS2. If we do any add jars, a class
loader is set in the SessionState's conf object. This class loader should also
be set in each thread that serves request of the same session.
Scenario (both requests are in the same session)-
{noformat}
// req 1
add jar foo.jar // Served by thread th1, this updates class loader and sets in
SessionState.conf
// req2 served by th2, such that th1 != th2
CREATE TEMPORARY FUNCTION foo_udf AS 'some class in foo.jar'
// This can throw class not found error, because although
// the new thread (th2) gets the same session state as th1,
// the class loader is different (Thread.currentThread.getContextClassLoader()
{noformat}
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