Hi Mingjiang,

Thanks! Yes, i was also trying this and is working in my scenario.

Best,

-Thomas

On Mon, Nov 10, 2014 at 1:09 AM, Mingjiang Shi <[email protected]> wrote:

> Hi Thomas,
> I think this can be achieved by modifying the file role_command_order.json
> under the stack definition folder (e.g. BIGTOP/0.8).
>
> Here is an example that defines the namenode should be started before
> starting the secondary namenode
>
> "SECONDARY_NAMENODE-START": ["NAMENODE-START"]
>
> ​
> Hope this helps.
>
>
> On Mon, Nov 10, 2014 at 4:49 PM, Thomas Yu <[email protected]> wrote:
>
>> Hi,
>>
>> I'm trying to extend ambari with a new stack and service definition, but
>> one of my service is depending on HDFS. I had tried to use the
>> <requiredServices> as well as <dependencies> tags in the metainfo.xml, but
>> that doesn't help so far.
>>
>> Basically, i'll need my service, e.g. "service1", to start only after HDFS
>> had been started, since the service need to initialize certain files in
>> the
>> HDFS. Is there a way to achieve that ?
>>
>> If possible, i would also like to control the sequence of installation
>> (i.e. having my service install after HDFS). Is this possible ?
>>
>>
>> Thanks,
>>
>> -Thomas
>>
>
>
>
> --
> Cheers
> -MJ
>
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