【flink】flink Source Coordinator Thread already exists driving actions Source Coordinator. Existing

1.概述

一个flink程序，什么也没做 ，昨天晚上9点的时候 集群突然就挂了，我7点下班的时候 还好好的

然后报错：Source Coordinator Thread already exists. There should never be more than one thread driving the actions of a Source Coordinator. Existing Thread

具体异常栈如下

报错位置位于：org.apache.flink.runtime.source.coordinator.SourceCoordinatorProvider.CoordinatorExecutorThreadFactory#newThread