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From "Maxim Khutornenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AURORA-1158) Consider finding preemption slots asynchronously
Date Mon, 02 Mar 2015 19:50:04 GMT
Maxim Khutornenko created AURORA-1158:
-----------------------------------------

             Summary: Consider finding preemption slots asynchronously 
                 Key: AURORA-1158
                 URL: https://issues.apache.org/jira/browse/AURORA-1158
             Project: Aurora
          Issue Type: Task
          Components: Scheduler
            Reporter: Maxim Khutornenko
            Assignee: Maxim Khutornenko


The current Preemptor implementation performs synchronous preemption victim search. This isn't
necessary as resource swap cannot be performed within the same scheduling loop due to victims
taking time to vacate their premises (being killed). 

Consider asynchronous victim search/killing instead. That will move the heavy lifting out
of the critical scheduling loop and remove "flat" preemptor perf tax applied on every failed
task scheduling/assignment.  



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