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https://issues.apache.org/jira/browse/HDFS-12991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nanda kumar updated HDFS-12991:
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Summary: Ozone: Service Discovery: Limit the number of datanodes (REST
servers) returned by KeySpaceManager#getServiceList call (was: Ozone: Service
Discovery: Limit number of datanodes (REST servers) returned by
KeySpaceManager#getServiceList call)
> Ozone: Service Discovery: Limit the number of datanodes (REST servers)
> returned by KeySpaceManager#getServiceList call
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-12991
> URL: https://issues.apache.org/jira/browse/HDFS-12991
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Nanda kumar
> Priority: Major
>
> To limit the number of datanodes (REST servers) returned by
> KeySpaceManager#getServiceList call we should use {{ozone.rest.servers}}
> property. The value for this property can be configured in the following 3
> ways.
> * List of machines
> Expressed as a hostname/IP of the machine followed by one or more machines
> which are comma separated.
> * IP/netmask notation
> Single value that looks like 192.234.200.0/255.255.255.0, In this only
> nodes with the matching IP address specified by this netmask will appear.
> * Regular expression which matches hostname
> This acts as a filter on the hostnames - For example datanode\[9?\].xxx.com
> - will expose only datanodes that are named
> datanode90,datanode91..etc(assuming datanodes are numbered using decimal in
> this example) nodes.
> These node lists are exposed if and only if they are healthy by default.
> All these three different forms are mutually exclusive and we will flag an
> error if more than one form is specified.
> If the property is missing or if the value is empty, KSM will return all
> datanodes that are healthy.
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