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Posted to issues@ozone.apache.org by "Nanda kumar (Jira)" <ji...@apache.org> on 2020/09/08 19:06:00 UTC
[jira] [Commented] (HDDS-3667) If we gracefully stop datanode it
would be better to notify scm and recon
[ https://issues.apache.org/jira/browse/HDDS-3667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17192404#comment-17192404 ]
Nanda kumar commented on HDDS-3667:
-----------------------------------
[~maobaolong], what advantage do we get by sending a stop signal from the datanode to SCM? This will require additional logic in Node Management code of SCM. If there is not much of value addition, we don't have to add additional complexity in SCM Node Management.
We should not directly go and remove a datanode with an admin command, for removing a datanode we should do decommissioning. Admin command to remove a datanode will just confuse the user.
Decommissioining Jira: HDDS-1880
> If we gracefully stop datanode it would be better to notify scm and recon
> --------------------------------------------------------------------------
>
> Key: HDDS-3667
> URL: https://issues.apache.org/jira/browse/HDDS-3667
> Project: Hadoop Distributed Data Store
> Issue Type: New Feature
> Components: Ozone Datanode, Ozone Recon, SCM
> Affects Versions: 1.0.0
> Reporter: maobaolong
> Assignee: Lisheng Sun
> Priority: Minor
> Labels: pull-request-available
>
> if you execute `bin/ozone --daemon stop datanode`, datanode would be better if it handle the signal and the stop dn request to scm, then scm update datanode state to dead.
> It would be better if you provide a admin cli tool to support remove datanode manually.
> {code:bash}
> ozone admin datanode remove <UUID>
> {code}
>
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