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From Jeff Zhang <zjf...@gmail.com>
Subject Re: Does Start All follow the service order ?
Date Thu, 31 Mar 2016 02:08:13 GMT
Thanks Mithun,  I thought the order was specified in metainfo.xml as
following

<requiredServices>
  <service>YARN</service>
</requiredServices>




On Thu, Mar 31, 2016 at 10:05 AM, Mithun Mathew <mithmatt@gmail.com> wrote:

> To my understanding, Start All Services would start the individual
> components according to the dependencies mentioned in
> role_command_order.json
> You can find this file under every stack. Here's the role_command_order.json
> for HDP 2.3
> <https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/stacks/HDP/2.3/role_command_order.json>
>
> If you want to force a start order for the component, you might have to
> look into adding an entry to the above file for that stack.
>
> Also note that if a service is already started state, Start All Services
> would not restart it (at least this was how it was, the last time I
> checked).
>
> On Wed, Mar 30, 2016 at 6:43 PM, Jeff Zhang <zjffdu@gmail.com> wrote:
>
>>
>> Here's the service starting order I see when I click Start All:
>>
>> Spark actually depends on Hive/Yarn/HDFS, but it's strange that I
>> NodeManager/HiveServer2 start after Spark HistoryServer and there's no
>> NameNode/DataNode start.
>>
>>
>>  YARN Client Install <http://localhost:8080/#>
>>  ZooKeeper Client Install <http://localhost:8080/#>
>>  Atlas Metadata Server Start <http://localhost:8080/#>
>>  MySQL Server Start <http://localhost:8080/#>
>>  Ranger Admin Start <http://localhost:8080/#>
>>  Zeppelin Notebook Start <http://localhost:8080/#>
>>  Ranger Usersync Start <http://localhost:8080/#>
>>  App Timeline Server Start <http://localhost:8080/#>
>>  History Server Start <http://localhost:8080/#>
>>  Hive Metastore Start <http://localhost:8080/#>
>>  ResourceManager Start <http://localhost:8080/#>
>>  Spark History Server Start <http://localhost:8080/#>
>>  ZooKeeper Server Start <http://localhost:8080/#>
>>  NodeManager Start <http://localhost:8080/#>
>>  HiveServer2 Start <http://localhost:8080/#>
>>  Oozie Server Start <http://localhost:8080/#>
>>  Flume Start <http://localhost:8080/#>
>>  WebHCat Server Start <http://localhost:8080/#>
>>
>> --
>> Best Regards
>>
>> Jeff Zhang
>>
>
>
>
> --
> *Mithun Mathew* (Matt)
>
>    - www.linkedin.com/in/mithunmatt/
>
>


-- 
Best Regards

Jeff Zhang

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