异常堆栈如下：
2015-11-24 16:49:11,495 ERROR org.apache.hive.service.cli.operation.Operation: Error running hive query:
org.apache.hive.service.cli.HiveSQLException: Illegal Operation state transition from CLOSED to ERROR
at org.apache.hive.service.cli.OperationState.validateTransition(OperationState.java:91)
at org.apache.hive.service.cli.OperationState.validateTransition(OperationState.java:97)
at org.apache.hive.service.cli.operation.Operation.setState(Operation.java:116)
at org.apache.hive.service.cli.operation.SQLOperation.runInternal(SQLOperation.java:159)
at org.apache.hive.service.cli.operation.SQLOperation.access$000(SQLOperation.java:69)
at org.apache.hive.service.cli.operation.SQLOperation$1$1.run(SQLOperation.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1642)
at org.apache.hadoop.hive.shims.HadoopShimsSecure.doAs(HadoopShimsSecure.java:502)
at org.apache.hive.service.cli.operation.SQLOperation$1.run(SQLOperation.java:213)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
When server close a operation(for example because of session timeout), it set the state to CLOSED, then the background operation is canceled, hive driver failed and try to set the state to ERROR, but it is illegal to do that. So exception occurs.
The patch simply ignore driver error when the current state is CLOSED(or CANCELED).
https://issues.apache.org/jira/browse/HIVE-9005
https://issues.apache.org/jira/browse/HIVE-5799