[jira] [Created] (AURORA-1075) schedule instance on every host matching constraints

["Jay Buffington (JIRA)" <ji...@apache.org>]

Jay Buffington created AURORA-1075:
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             Summary: schedule instance on every host matching constraints
                 Key: AURORA-1075
                 URL: https://issues.apache.org/jira/browse/AURORA-1075
             Project: Aurora
          Issue Type: Story
          Components: Scheduler
            Reporter: Jay Buffington


I'd like aurora to schedule an instance of a given job on every host it has seen an offer for.  So if I were to create this job:

{noformat}
import os
jobs = [Job(
  task=SimpleTask(name="hello_world", command="echo hello world"),
  role=os.getenv('USER'),
  cluster="cluster1",
  instances="*"
)]
{noformat}

It would result in hello world running on every host in the cluster where there is room.

If I were to set constraints (e.g. dedicated role), only hosts matching constraints would have the instances started on it.

If the Job is a production job, instances of other jobs would be preempted if necessary to make room for this instance on every host aurora knows about.



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