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https://issues.apache.org/jira/browse/HDDS-12389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Andika updated HDDS-12389:
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Description:
Currently, we allow datanode to be stopped anytime using "ozone --daemon stop
datanode" command regardless even if the datanode is still active (e.g. there
is still an active write pipeline on the datanode). This affects user writes
since the pipeline is still being used. It might also trigger unnecessary
container migrations since the SCM might think that the datanode is DEAD
instead of just IN_MAINTENANCE.
I propose that by default datanode can only be stopped by administrator if it
is either IN_MAINTENANCE or DECOMMISSIONED. If the administrator wants to stop
it forcefully, he/she needs to specify the --force flag ("ozone --daemon stop
--force").
was:
Currently, we allow datanode to be stopped anytime using "ozone --daemon stop
datanode" command regardless even if the datanode is still active (e.g. there
is still an active write pipeline on the datanode).
I propose that by default datanode can only be stopped by administrator if it
is either IN_MAINTENANCE or DECOMMISSIONED. If the administrator wants to stop
it forcefully, he/she needs to specify the --force flag ("ozone --daemon stop
--force").
> Disallow stopping active datanode
> ---------------------------------
>
> Key: HDDS-12389
> URL: https://issues.apache.org/jira/browse/HDDS-12389
> Project: Apache Ozone
> Issue Type: Improvement
> Components: Ozone Datanode
> Reporter: Ivan Andika
> Assignee: Ivan Andika
> Priority: Major
>
> Currently, we allow datanode to be stopped anytime using "ozone --daemon stop
> datanode" command regardless even if the datanode is still active (e.g. there
> is still an active write pipeline on the datanode). This affects user writes
> since the pipeline is still being used. It might also trigger unnecessary
> container migrations since the SCM might think that the datanode is DEAD
> instead of just IN_MAINTENANCE.
> I propose that by default datanode can only be stopped by administrator if it
> is either IN_MAINTENANCE or DECOMMISSIONED. If the administrator wants to
> stop it forcefully, he/she needs to specify the --force flag ("ozone --daemon
> stop --force").
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