zhihai xu created HIVE-13960:
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Summary: Session timeout may happen before
HIVE_SERVER2_IDLE_SESSION_TIMEOUT for back-to-back synchronous operations.
Key: HIVE-13960
URL: https://issues.apache.org/jira/browse/HIVE-13960
Project: Hive
Issue Type: Bug
Components: HiveServer2
Reporter: zhihai xu
Assignee: zhihai xu
Session timeout may happen before
HIVE_SERVER2_IDLE_SESSION_TIMEOUT(hive.server2.idle.session.timeout) for
back-to-back synchronous operations.
This issue can happen with the following two operations op1 and op2: op2 is a
synchronous long running operation, op2 is running right after op1 is closed.
1. closeOperation(op1) is called:
this will set {{lastIdleTime}} with value System.currentTimeMillis() because
{{opHandleSet}} becomes empty after {{closeOperation}} remove op1 from
{{opHandleSet}}.
2. op2 is running for long time by calling {{executeStatement}} right after
closeOperation(op1) is called.
If op2 is running for more than HIVE_SERVER2_IDLE_SESSION_TIMEOUT, then the
session will timeout even when op2 is still running.
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