连接自动断开并提示：connection reset

[zhouxin3200]

当我一段时间不提交任务，过段时间提交的时候，系统会提示如下：
Unknown HS2 problem when communicating with Thrift server.
Error: org.apache.thrift.transport.TTransportException: java.net.SocketException: Connection reset (state=08S01,code=0)
只有当我在运行！reconnect的时候才能重新连接服务，请问设置哪个参数可以避免这种自动断开。

[pan3793]

It was explained in FAQ

Kyuubi Server will close idle connection (kyuubi.session.idle.timeout, default is 6 hours), if you are using JDBC Connection Pool like Hikari, the connection obtained from the pool may hold an expired session handle, please do health check before using to avoid such issue.

[zhouxin3200]

thank you very much , it will be disconnect about 10 minute，and there is no error in the background.

[pan3793]

We have received a similar case caused by network firewall policy, the network topology looks like beeline ==(firewall/vpn)==> kyuubi, and the network policy will drop the idle socket.