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https://issues.apache.org/jira/browse/HDDS-1933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17058304#comment-17058304
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Siddharth Wagle commented on HDDS-1933:
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DatanodeDetails are identified by unique UUID already, the problem according to
me is that NodeManager has a Map <ip -> DatanodeDetails> which can be
Map<hostname -> DatanodeDetails> which should make it ip independent based on
my previous analysis, although I have tested this, just looked at the code and
pointed out where we use this config property to decide what should be the key
in the Map.
> Datanode should use hostname in place of ip addresses to allow DN's to work
> when ipaddress change
> -------------------------------------------------------------------------------------------------
>
> Key: HDDS-1933
> URL: https://issues.apache.org/jira/browse/HDDS-1933
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode, SCM
> Affects Versions: 0.4.0
> Reporter: Mukul Kumar Singh
> Priority: Blocker
>
> This was noticed by [~elek] while deploying Ozone on Kubernetes based
> environment.
> When the datanode ip address change on restart, the Datanode details cease to
> be correct for the datanode. and this prevents the cluster from functioning
> after a restart.
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