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https://issues.apache.org/jira/browse/HDDS-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851473#comment-16851473
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Dinesh Chitlangia commented on HDDS-1581:
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[~xyao] Thanks. I will log a patch shortly.
> Atleast one of the metadata dir config property must be tagged as REQUIRED
> --------------------------------------------------------------------------
>
> Key: HDDS-1581
> URL: https://issues.apache.org/jira/browse/HDDS-1581
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Affects Versions: 0.4.0
> Reporter: Dinesh Chitlangia
> Assignee: Dinesh Chitlangia
> Priority: Major
> Labels: configuration
>
> This issue was discovered while working on HDDS-373 to generate a minimal
> ozone-site.xml with required values.
> {panel:title=ozone-default.xml}
> <property>
> <name>ozone.metadata.dirs</name>
> <value/>
> <tag>OZONE, OM, SCM, CONTAINER, STORAGE</tag>
> <description>
> This setting is the fallback location for SCM, OM and DataNodes
> to store their metadata. This setting may be used in test/PoC clusters
> to simplify configuration.
> For production clusters or any time you care about performance, it is
> recommended that ozone.om.db.dirs, ozone.scm.db.dirs and
> dfs.container.ratis.datanode.storage.dir be configured separately.
> </description>
> </property>
> {panel}
> However, none of the properties listed above are tagged as REQUIRED.
> For starters, as the goal of HDDS-373 is to generate a simple minimal
> ozone-site.xml that can be used to start ozone, I propose that we do either
> of the following:
> 1. Tag ozone.metadata.dirs as REQUIRED
> OR
> 2. Tag ozone.om.db.dirs, ozone.scm.db.dirs and
> dfs.container.ratis.datanode.storage.dir as REQUIRED
> For simplicity, I would prefer option 1 as that is the fallback config. We
> have already stated that for production use, we must defined the granular
> properties instead of relying on this fallback property ozone.metadata.dirs
> cc: [~anu], [~arp], [~ajayydv] could you share your 2 cents pls? :)
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