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From "Hari Sekhon (JIRA)" <>
Subject [jira] [Updated] (AMBARI-6706) Rolling restarts for HA Masters eg HDFS NameNodes
Date Fri, 01 Aug 2014 14:12:41 GMT


Hari Sekhon updated AMBARI-6706:

    Environment: Ambari 1.6.1 with HDP 2.1  (was: Hortonworks HDP 2.1 with Ambari 1.6.1)

> Rolling restarts for HA Masters eg HDFS NameNodes
> -------------------------------------------------
>                 Key: AMBARI-6706
>                 URL:
>             Project: Ambari
>          Issue Type: Improvement
>    Affects Versions: 1.6.1
>         Environment: Ambari 1.6.1 with HDP 2.1
>            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

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