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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