[jira] [Created] (HIVE-13960) Session timeout may happen before HIVE_SERVER2_IDLE_SESSION_TIMEOUT for back-to-back synchronous operations.

["zhihai xu (JIRA)" <ji...@apache.org>]

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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