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https://issues.apache.org/jira/browse/HDDS-3591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653599#comment-17653599
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Hongbing Wang commented on HDDS-3591:
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I added the following design document:
h2. Reconfigurability in Ozone
h4. Goals:
Add an generic interface for dynamically reconfiguring for the OM or SCM
service.
h4. Solution:
It might be a good idea to use dynamic reconfiguring commands similar to those
used in hadoop projects. In hadoop, there are two general refresh interface:
`RefreshHandler` which refreshes the specified key, and `ReconfigurableBase`
which refreshes the changed value in the configuration file. This design will
be based on `ReconfigurableBase`.
The refresh command in Hadoop is as follows:
{code:java}
hdfs dfsadmin -reconfig <namenode|datanode> <host:ipc_port>
<start|status|properties> {code}
The refresh command in Ozone is as follows:
{code:java}
ozone admin om reconfig -address=<ip:port> -op=start|status|properties {code}
`ServiceRuntimeInfoImpl` is a common implementation class for OM and SCM
runtimes. We can have the ServiceRuntimeInfoImpl inherit ReconfigurableBase.
Follow-up：We can abstract the protocol class into the `hdds-server-framework`
module so that it can be reused as a common part for other components, if
needed.
> ozone.administrators support dynamic changes through the cli.
> -------------------------------------------------------------
>
> Key: HDDS-3591
> URL: https://issues.apache.org/jira/browse/HDDS-3591
> Project: Apache Ozone
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: mingchao zhao
> Priority: Major
> Labels: pull-request-available
>
> The current configuration of ozone. Administrators is static, so we need to
> restart om if we want to add a new admin. This is inconvenient, we hope to be
> able to dynamically add admin through cli. And we need to save the
> persistence in case lose it on the next reboot.
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