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From "Aleksandr Kovalenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-3509) Reassign Master: Restart services should be the part of Reassign master wizard
Date Mon, 14 Oct 2013 14:47:43 GMT
Aleksandr Kovalenko created AMBARI-3509:
-------------------------------------------

             Summary: 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
            Reporter: Aleksandr Kovalenko
            Assignee: Aleksandr Kovalenko
            Priority: Critical


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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