quartz集群服务器时钟不同步导致
Quartz集群问题：
This scheduler instance (SchedulerName) is still active but was recovered by another instance in the cluster
原因：集群服务器时钟不同步导致
This exception often occurs when the clock times on the cluster nodes are not synchronized. ?If the clock times on cluster nodes are more than 1.7 seconds out of synch you will start to see these Quartz messages in the log.
解决方法：
Synchronize the time on all cluster nodes and then restart the cluster. ?The messages should no longer appear in the log.
