Nanda kumar created HDFS-12991:
----------------------------------
Summary: Ozone: Service Discovery: Limit 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
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.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
