[jira] [Created] (AURORA-1658) Aurora is throttling itself via a non-optimal offer filter time

["Stephan Erb (JIRA)" <ji...@apache.org>]

Stephan Erb created AURORA-1658:
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             Summary: Aurora is throttling itself via a non-optimal offer filter time
                 Key: AURORA-1658
                 URL: https://issues.apache.org/jira/browse/AURORA-1658
             Project: Aurora
          Issue Type: Bug
          Components: Scheduler
            Reporter: Stephan Erb
            Assignee: Stephan Erb


Aurora is declining Mesos offers in various scenarios:

* when launching a task, the remaining resources of the offer are declined implicitly
* when compacting multiple offers of a slave into a single one

Whenever we do this, we don't pass a  {{Filter}} and [therefore use the default of 5 seconds|https://github.com/apache/mesos/blob/df29bf0338771c92d1b1d3848181a35429cdcf0f/include/mesos/mesos.proto#L1393-L1400]. This tells Mesos to return the resources to us only after a timeout of 5 seconds, even if there is no other framework that wants them.

This is not a problem if you have large clusters. However for small clusters or clusters with little available free resources this can lead Aurora unnecessarily throttling itself.In addition, this might lead to tasks being scheduled on nodes which have be been put into maintenance mode.




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