找到了,结贴
5) If hive.server2.session.check.interval = 0 and hive.server2.idle.session.timeout > 0, then it will have the same effect that hive.server2.idle.session.timeout = 0, because no idle timer will be triggered as check interval is disabled
6) If hive.server2.session.check.interval > hive.server2.idle.session.timeout > 0, then the actual time out will be the same as hive.server2.session.check.interval.
For example if hive.server2.session.check.interval = 20 minutes, but hive.server2.idle.session.timeout = 10 minutes, then timeout will happen when checking happens, which is 20 minutes.
The basic rule of thumb is as follows:
hive.server2.session.check.interval < hive.server2.idle.operation.timeout < hive.server2.idle.session.timeout
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