Roles and Oversubscription

[John Omernik <jo...@omernik.com>]

How do roles and oversubscription work together?  When you specify
resources that can be oversubscribed, do you say what role they work in? Is
"revocable" a role in and of itself?

I am trying to work through these various items in my path to learning more
about oversubscription.

Thanks!

John

RE: Roles and Oversubscription

["Plotka, Bartlomiej" <ba...@intel.com>]

Hi John,

As you can see here: https://github.com/apache/mesos/blob/master/docs/oversubscription.md#launching-tasks-using-revocable-resources
… “revocable” is only an additional attribute in Mesos Resource. So you can specify the roles independently of revocable on/off.

For example you could specify some revocable resources in Fixed Resource Estimator for role “example”:
--resource_estimator="org_apache_mesos_FixedResourceEstimator"

--modules='{
  "libraries": {
    "file": "/usr/local/lib64/libfixed_resource_estimator.so",
    "modules": {
      "name": "org_apache_mesos_FixedResourceEstimator",
      "parameters": {
        "key": "resources",
        "value": "cpus(example):14"
      }
    }
  }
}'
As a result frameworks with this role can access these.

Feel free to ask if anything else need to be explained.

Kind Regards,
Bartek Plotka (bplotka)

From: John Omernik [mailto:john@omernik.com]
Sent: Wednesday, December 2, 2015 4:47 PM
To: user@mesos.apache.org
Subject: Roles and Oversubscription

How do roles and oversubscription work together?  When you specify resources that can be oversubscribed, do you say what role they work in? Is "revocable" a role in and of itself?

I am trying to work through these various items in my path to learning more about oversubscription.

Thanks!

John


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