我正在尝试使用node-red-contrib-rdkafka节点在Node-RED中使用Kafka主题。为此，我依次添加了相应的rdkafka输入节点（连接到同一代理），并通过从 Deploy 菜单中选择仅修改后的节点来部署每个输入节点。
这对于三个输入节点正常工作，但是，在添加第四个输入节点之后，Node-RED是否崩溃？重复按下 Deploy 菜单按钮。
Node-RED从official Node-RED image on Docker Hub作为docker容器启动。如您在下面的控制台输出中看到的，缺少第四个使用者的相应部署日志条目：
$ docker run --rm -p1880:1880 nodered/node-red-docker
> node-red-docker@1.0.0 start /usr/src/node-red
> node $NODE_OPTIONS node_modules/node-red/red.js -v $FLOWS "--userDir" "/data"
10 Sep 09:02:13 - [info]
Welcome to Node-RED
===================
10 Sep 09:02:13 - [info] Node-RED version: v0.18.7
10 Sep 09:02:13 - [info] Node.js version: v6.14.2
10 Sep 09:02:13 - [info] Linux 4.15.0-33-generic x64 LE
10 Sep 09:02:14 - [info] Loading palette nodes
10 Sep 09:02:14 - [warn] ------------------------------------------------------
10 Sep 09:02:14 - [warn] [node-red/rpi-gpio] Info : Ignoring Raspberry Pi specific node
10 Sep 09:02:14 - [warn] ------------------------------------------------------
10 Sep 09:02:14 - [info] Settings file : /data/settings.js
10 Sep 09:02:14 - [info] User directory : /data
10 Sep 09:02:14 - [warn] Projects disabled : editorTheme.projects.enabled=false
10 Sep 09:02:14 - [info] Flows file : /data/flows.json
10 Sep 09:02:14 - [info] Creating new flow file
10 Sep 09:02:14 - [info] Server now running at http://127.0.0.1:1880/
10 Sep 09:02:14 - [debug] loaded flow revision: d751713988987e9331980363e24189ce
10 Sep 09:02:14 - [debug] red/runtime/nodes/credentials.load : no user key present
10 Sep 09:02:14 - [debug] red/runtime/nodes/credentials.load : no default key present - generating one
10 Sep 09:02:14 - [debug] red/runtime/nodes/credentials.load : keyType=system
10 Sep 09:02:14 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
10 Sep 09:02:14 - [info] Starting flows
10 Sep 09:02:14 - [debug] red/nodes/flows.start : starting flow : global
10 Sep 09:02:14 - [info] Started flows
10 Sep 09:03:06 - [debug] red/runtime/nodes/credentials.export : encrypting
10 Sep 09:03:06 - [debug] saved flow revision: 104fe97f482455c034c59d6ada2b0506
10 Sep 09:03:06 - [info] Stopping modified nodes
10 Sep 09:03:06 - [debug] red/nodes/flows.stop : stopping flow : global
10 Sep 09:03:06 - [info] Stopped modified nodes
10 Sep 09:03:06 - [info] Starting modified nodes
10 Sep 09:03:06 - [debug] red/nodes/flows.start : starting flow : 94de589e.3ca0d
10 Sep 09:03:06 - [info] Started modified nodes
10 Sep 09:03:06 - [rdkafka] Created consumer subscription on topic = aaa
10 Sep 09:03:15 - [debug] saved flow revision: c79908034bbcb133fe2513658a898420
10 Sep 09:03:15 - [info] Stopping modified nodes
10 Sep 09:03:15 - [debug] red/nodes/flows.stop : stopping flow : global
10 Sep 09:03:15 - [debug] red/nodes/flows.stop : stopping flow : 94de589e.3ca0d
10 Sep 09:03:15 - [info] Stopped modified nodes
10 Sep 09:03:15 - [info] Starting modified nodes
10 Sep 09:03:15 - [info] Started modified nodes
10 Sep 09:03:15 - [rdkafka] Created consumer subscription on topic = bbb
10 Sep 09:03:20 - [debug] saved flow revision: f12926c7372236cd29f3d58852c2ca1a
10 Sep 09:03:20 - [info] Stopping modified nodes
10 Sep 09:03:20 - [debug] red/nodes/flows.stop : stopping flow : global
10 Sep 09:03:20 - [debug] red/nodes/flows.stop : stopping flow : 94de589e.3ca0d
10 Sep 09:03:20 - [info] Stopped modified nodes
10 Sep 09:03:20 - [info] Starting modified nodes
10 Sep 09:03:20 - [info] Started modified nodes
10 Sep 09:03:20 - [rdkafka] Created consumer subscription on topic = ccc
10 Sep 09:03:25 - [debug] saved flow revision: 81288df5f3243d7da90970571c3dc4a3
10 Sep 09:03:25 - [info] Stopping modified nodes
10 Sep 09:03:25 - [debug] red/nodes/flows.stop : stopping flow : global
10 Sep 09:03:25 - [debug] red/nodes/flows.stop : stopping flow : 94de589e.3ca0d
10 Sep 09:03:25 - [info] Stopped modified nodes
10 Sep 09:03:25 - [info] Starting modified nodes
10 Sep 09:03:25 - [info] Started modified nodes
10 Sep 09:03:25 - [rdkafka] Created consumer subscription on topic = ddd
=== no log entries corresponding to deployment ===
Kafka经纪人以$ docker-compose up -d examples/cp-all-in-one从official Confluent repository开始。但是，与landoop Kafka一起使用时，会发生相同的问题。
到目前为止，我能找到的最接近的“解释”是this open issue。但是我仍然不确定这种行为是否是设计使然，实际上是我达到了隐式极限或采用这种方法的错误做法。
这种限制/行为的原因可能是什么？