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From Mithun Mathew <>
Subject Re: Advice on Ambari M-Pack
Date Tue, 15 Nov 2016 03:53:34 GMT
Hi Steve

You should look into recommending configurations during install time of
your service. This lets the user know what options are being changed as a
result of installing the service, and gives the user a chance to accept,
modify or reject your recommendations.

This can be done by implementing a service advisor (ideally, this should
work within the m-pack).

Ambari Wiki:

Here's an example of a service_advisor recommending configurations for


On Mon, Nov 14, 2016 at 6:29 PM, Steve Varnau <>

> Ambari developers,
> I'm working on an Ambari MPack to add a service for Trafodion (Apache
> incubating).  I've figured out the basics, but I'm not sure of the best
> technique when my service needs to modify config values for another
> service. In this case, we install an HBase co-processor, which is done by
> modifying HBase config parameters (ex: hbase.coprocessor.region.classes).
> Should my MPack be trying to modify the HBase defaults, so that they are
> presented to the user at config time? Or should my install steps be
> instantiating config values somehow that HBase will pick up?  Or is there
> some better way?
> Thanks for any advice.
> --Steve

*Mithun Mathew* (Matt)


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