Azure Batch default application package version

Question

According to the Microsoft Documentation, in Azure Batch without the version specified the default version of an application will be deployed.

In my Azure Batch Account I have uploaded an application "MyApp" and set the default version, lets say version "1.0".

When I create a new Pool (in .NET) if I set the ApplicationPackageReferences omitting the version, i.e:

 myCloudPool.ApplicationPackageReferences = new List<ApplicationPackageReference>
 {
     new ApplicationPackageReference 
     {
        ApplicationId = "MyApp"
     }
 };

The nodes will get the status "Unusable".

If I do the same, but at task level, then the default application is deployed successfully to the node.

Why is that?

Hiya, Cool, so what you mentioned above seems like this is happening at the pool level, this can only happen if there is a node error, can you check the error summary and see what is the error details appearing. I might be able to help you out. :) — Tats_innit
I am taking a look and might build a small case around this and dig deeper, in the mean time, I would recommend using the version at the pool level OR if the task level with default version supports the scenario. — Tats_innit

Tats_innit Tats_innit · Accepted Answer · 2017-11-08T11:32:17

Thank you Olandese, I came across this specific case only in the case for default version at pool level and the fix is under its way, I will keep you posted when it will get released.

In the mean time there are few options or at pool level you can do so by using the version parameter.

Task level packages with default, which you are already mentioned above.
Use of the version parameter to pass the default version.

` Sample:

 new List< ApplicationPackageReference >

{
     new ApplicationPackageReference(appID, version: appVersion),
},

`

Thanks for your patience, apologies for the inconvenience, will update you once the release is out.

Further addition: If you have faster changing default version

I would do it this way: (With appId as constant and the version as the dynamic version)

By doing this your code pretty much guarantees that node will go and grab the specified version mentioned if its there. Hope this helps.

`

new List<ApplicationPackageReference> 
    {
         new ApplicationPackageReference(appID, version: appVersion),
    },

Azure Batch default application package version

1 Answers