[jira] [Commented] (IOTDB-3899) Remove 1 datanode，add peer failed，but continue to shrink（remove peer , remove region,delete region）

[QiangShaowei (Jira)]

    [ 
https://issues.apache.org/jira/browse/IOTDB-3899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17568901#comment-17568901
 ] 

QiangShaowei commented on IOTDB-3899:
-------------------------------------

{code:java}
 private TSStatus addPeer() {
      ConsensusGroupId regionId = 
ConsensusGroupId.Factory.createFromTConsensusGroupId(tRegionId);
      TSStatus status = new 
TSStatus(TSStatusCode.SUCCESS_STATUS.getStatusCode());
      ConsensusGenericResponse resp = null;
        ......
      }
      if (!addPeerSucceed || resp == null || !resp.isSuccess()) {
        taskLogger.error("add new peer {} for region {} failed", newPeerNode, 
regionId);
{color:red}        //  fix: the status should set to FAILED before  
return{color}
{color:red}        return status;{color}
      }

      taskLogger.debug("succeed to add peer {} for region {}", newPeerNode, 
regionId);
      status.setMessage("add peer " + newPeerNode + " for region " + regionId + 
" succeed");
      return status;
    }
{code}


> Remove 1 datanode，add peer failed，but continue to shrink（remove peer , remove 
> region,delete region）
> ---------------------------------------------------------------------------------------------------
>
>                 Key: IOTDB-3899
>                 URL: https://issues.apache.org/jira/browse/IOTDB-3899
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: mpp-cluster
>    Affects Versions: 0.14.0-SNAPSHOT
>            Reporter: 刘珍
>            Assignee: QiangShaowei
>            Priority: Major
>         Attachments: image-2022-07-20-14-11-54-994.png
>
>
> RatisConsensus，
> 3副本3C7D，缩容1个节点，缩容节点的 datanode报错：
> 2022-07-20 11:32:04,775 [pool-16-IoTDB-Region-Migrate-Pool-1] ERROR 
> o.a.i.d.s.RegionMigrateService$RegionMigrateTask:349 - add new peer 
> TEndPoint(ip:172.20.70.4, port:40010) for region DataRegion[1] failed
> 但是缩容操作却继续执行（dataregion 1 remove 成功），下面是debug日志：
>  !image-2022-07-20-14-11-54-994.png! 
> 测试流程同
> https://issues.apache.org/jira/browse/IOTDB-3896



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