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https://issues.apache.org/jira/browse/AMBARI-6706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hari Sekhon updated AMBARI-6706:
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Issue Type: New Feature (was: Improvement)
> Rolling restarts for HA Masters eg HDFS NameNodes
> -------------------------------------------------
>
> Key: AMBARI-6706
> URL: https://issues.apache.org/jira/browse/AMBARI-6706
> Project: Ambari
> Issue Type: New Feature
> Affects Versions: 1.6.1, 1.7.0
> Environment: HDP 2.1 & HDP 2.2
> Reporter: Hari Sekhon
>
> Rolling restarts currently only work for slaves such as Datanodes in Web UI
> when doing Service Actions -> Restart Datanodes. When doing a Restart All it
> doesn't give any option to do a rolling restart across all components
> including masters.
> I usually configure HDFS NameNode HA but this means that in Ambari there is
> downtime in reconfiguration even with NN HA enabled since it doesn't do
> rolling restarts of the NameNodes in order to keep the cluster up.
> This is needed to actually make the service really HA including HA during
> routine maintenance and reconfiguration. Maybe I could workaround to shut
> master components one by one manually but would be nice if Ambari could
> support this directly.
> Regards,
> Hari Sekhon
> http://www.linkedin.com/in/harisekhon
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