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https://issues.apache.org/jira/browse/HDDS-1953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905406#comment-16905406
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Siddharth Wagle commented on HDDS-1953:
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How can we determine if pipeline is lost? I did bring this point up in the 
design doc for multi-raft. 
PipelineManager can instead listen in on heartbeats and react?

> Remove pipeline persistent in SCM
> ---------------------------------
>
>                 Key: HDDS-1953
>                 URL: https://issues.apache.org/jira/browse/HDDS-1953
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Sammi Chen
>            Assignee: Sammi Chen
>            Priority: Major
>
> Currently, SCM will persistent pipeline in metastore with datanode 
> information locally. After SCM restart, it will reload all the pipelines from 
> the metastore.  If there is any datanode information change during the whole 
> SCMc lifecycle, the persisted pipeline is not updated. 



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