@Override
    public String toString() {
        return "ConsumerEventManager [disconnectEventMap=" + disconnectEventMap + ", connectEventMap="
                + connectEventMap + "]";
    }
Get all consumer id which have unfinished event

@return consumer id set
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/nodemanage/nodeconsumer/ConsumerEventManager.java