idleTimeout新设置参数未生效

求教：感谢！

问题描述：
8月18日设置后，重新启动cobar
—cobar设置连接空闲断开间隔时间（秒数，30天）
vi server.xml
2592000

8月24日查询日志有如下idle timeout;
11:11:30,315 WARN [thread=TimerExecutor2,class=ServerConnection,host=10.172.189.85,port=53125,schema=clydesdale] idle timeout
11:11:30,315 WARN [thread=TimerExecutor2,class=ServerConnection,host=10.172.189.85,port=44007,schema=clydesdale] idle timeout
11:11:30,318 WARN [thread=TimerExecutor2,class=ServerConnection,host=10.172.189.85,port=40209,schema=clydesdale] idle timeout

Start with the server.xml idleTimeout property and the ServerConnection idle-timeout handling indicated by the log entries. Trace how the configured 2,592,000-second value is read and compared with connection idle time. Done means the configured interval is honored and the observed timeout behavior is explained or corrected.

Written by the indexing model from the issue text.