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https://issues.apache.org/jira/browse/IOTDB-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17539589#comment-17539589
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Quan Siyi commented on IOTDB-3231:
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The phenomenon is not a problem. When we use client to connect to data node,
data node needs to check the authority of the user info which is managed by
config nodes. So when the config nodes are all down, data node cannot open a
session for users.
> Datanode can not be connected when all confignodes have been stoped.
> --------------------------------------------------------------------
>
> Key: IOTDB-3231
> URL: https://issues.apache.org/jira/browse/IOTDB-3231
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Cluster
> Affects Versions: 0.14.0-SNAPSHOT
> Reporter: FengQingxin
> Assignee: Quan Siyi
> Priority: Major
> Attachments: image-2022-05-18-10-33-39-333.png
>
>
> 复线方法：
> 1.启动一个3C3D的集群
> 2.使用cli命令登录（成功）
> 3.使用stop-confignode.sh停止所有confignode（正常）
> 4.使用处理登录（报错Can not establish connection with jdbc:iotdb://Chaos-5:6667/ :
> Internal error processing openSession. Host is Chaos-5, port is 6667.
> ）
>
> !image-2022-05-18-10-33-39-333.png!
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