[jira] [Commented] (IOTDB-1434) cluster_scalability：Stop 1 node in the 2-node cluster，create timeseires successfully

["Tianan Li (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IOTDB-1434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17366603#comment-17366603 ] 

Tianan Li commented on IOTDB-1434:
----------------------------------

Form my point of view, it's not a issue. I think as long as the system can provide normal services, the metadata leader in the scenario you described is still valid, and the data group just responsible for managing the schema is still running normally. At this time, the consistency will still be guaranteed after the successful request.

> cluster_scalability：Stop 1 node in the 2-node cluster，create timeseires successfully
> ------------------------------------------------------------------------------------
>
>                 Key: IOTDB-1434
>                 URL: https://issues.apache.org/jira/browse/IOTDB-1434
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: Cluster
>    Affects Versions: 0.12.0
>            Reporter: 刘珍
>            Priority: Major
>         Attachments: image-2021-06-11-12-56-00-425.png
>
>
> cluster info :
> https://github.com/apache/iotdb/pull/3191
> commit f1e98e4bb77f7b5f09149d396e8eee8463bd2fc5
> Author: lta <li...@163.com>
> Date:   Thu Jun 10 00:52:26 2021 +0800
> iotdb-cluster.properties：
> seed_nodes=192.168.130.21:9003,192.168.130.13:9005
> default_replica_num=1
> node-21 execute :
>   nohup ./sbin/start-node.sh > node21.out &
> node-13 execute:
>   nohup ./sbin/start-node.sh > node13.out &
> node-21 cli execute:
> CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN
> --successfully.
> node-13 execute:
>  ./sbin/stop-server.sh
>  
> [iotdb@fit21 node21]$ ./sbin/nodetool.sh status
> Node                                Status
> 192.168.130.21:9003:40010:6667->        on
> 192.168.130.13:9005:40010:6667->       off
> node-21 cli execute:
> CREATE TIMESERIES root.ln.wf01.wt01.node21 WITH DATATYPE=BOOLEAN, ENCODING=PLAIN
> --successfully.
> I think,it should be failed，because more than half of the nodes in the cluster must be online to provide services.
> another question，node-21 cli：
> show timeseries;
> It costs 60.344s
> It costs too long。
>  !image-2021-06-11-12-56-00-425.png|thumbnail! 



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