https://github.com/alibaba/canal/blob/80ca4366dbe624561f6949d8c8cc4901096c7b22/client/src/main/java/com/alibaba/otter/canal/client/impl/ClusterCanalConnector.java#L68 `accessStrategy.currentNode()`会报错，导致`currentConnector.disconnect()`未调用，发生内存泄漏，逻辑如下 
canal/client/src/main/java/com/alibaba/otter/canal/client/impl/ClusterCanalConnector.java
Line 68 in 80ca436
accessStrategy.currentNode()会报错，导致currentConnector.disconnect()未调用，发生内存泄漏，逻辑如下