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From "Antonenko Alexander (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-3509) Reassign Master: Restart services should be the part of Reassign master wizard
Date Mon, 14 Oct 2013 14:53:42 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-3509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13794162#comment-13794162
] 

Antonenko Alexander commented on AMBARI-3509:
---------------------------------------------

+1 for the patch

> Reassign Master: Restart services should be the part of Reassign master wizard
> ------------------------------------------------------------------------------
>
>                 Key: AMBARI-3509
>                 URL: https://issues.apache.org/jira/browse/AMBARI-3509
>             Project: Ambari
>          Issue Type: Task
>          Components: client
>    Affects Versions: 1.4.2
>            Reporter: Aleksandr Kovalenko
>            Assignee: Aleksandr Kovalenko
>            Priority: Critical
>             Fix For: 1.4.2
>
>         Attachments: AMBARI-3509.patch
>
>
> NameNode and ResourceManager/Jobtracker are primary master components of Hadoop. After
Moving them to another hosts, its important to validate the usability status of all hadoop
services. Also other services have dependency on HDFS and Yarn/Mapreduce as following:
> * Reassigning Namenode requires Nagios, Ganglia,HDFS, zookeeper, HBase, Oozie restart.
> * Reassigning ResourceManager requires Nagios, Ganglia, Yarn and Oozie restart.
> * Reassigning SNameNode requires HDFS, Nagios and Ganglia restart.
> For HDFS component reassignment, Step4 of Reassign master wizard ("Install,Start and
Test") has "Stop HDFS" and step6 ("Install Start and Test") has "Start HDFS" as last stage
of the step.  
> Instead of these "Stop HDFS" and "Start HDFS", We should have "Stop Services" and "Start
Services".  Running smoke test tasks should be part of "Start Services". This can be done
by passing parameter run_smoke_test as true with start services URL:  /clusters/{clusterName}/services?params/run_smoke_test=true
> Same holds for ResourceManager/Jobtracker reassignment.



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